Home / 158,742.32-219,067.07-87,129

Finding the Fourth Proportional to 158,742.32, 219,067.07 and 87,129

Calculator

Solution

The fourth proportional to 158,742.32, 219,067.07 and 87,129 is: 120,239.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,742.32 : 219,067.07 = 87,129 : x
  2. Step 2: Convert to fraction form
    158,742.32/219,067.07 = 87,129/x
  3. Step 3: Cross multiply
    158,742.32x = 219,067.07 × 87,129
  4. Step 4: Simplify right side
    158,742.32x = 19,087,094,306.39
  5. Step 5: Solve for x
    x = 19,087,094,306.39/158,742.32
  6. Step 6: Final answer
    x = 120,239.49

Related Problems

Find fourth proportional to 79,371.16, 109,533.53 and 43,564.50
Half scale
Find fourth proportional to 317,484.63, 438,134.13 and 174,258
Double scale
Find fourth proportional to 158,743.32, 219,068.45 and 87,130
Similar ratio
Find fourth proportional to 238,113.47, 328,600.60 and 130,693.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.