Home / 111,171.20-153,402-63,421.76

Finding the Fourth Proportional to 111,171.20, 153,402 and 63,421.76

Calculator

Solution

The fourth proportional to 111,171.20, 153,402 and 63,421.76 is: 87,513.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,171.20 : 153,402 = 63,421.76 : x
  2. Step 2: Convert to fraction form
    111,171.20/153,402 = 63,421.76/x
  3. Step 3: Cross multiply
    111,171.20x = 153,402 × 63,421.76
  4. Step 4: Simplify right side
    111,171.20x = 9,729,024,827.52
  5. Step 5: Solve for x
    x = 9,729,024,827.52/111,171.20
  6. Step 6: Final answer
    x = 87,513.90

Related Problems

Find fourth proportional to 55,585.60, 76,701 and 31,710.88
Half scale
Find fourth proportional to 222,342.40, 306,804 and 126,843.52
Double scale
Find fourth proportional to 111,172.20, 153,403.38 and 63,422.76
Similar ratio
Find fourth proportional to 166,756.80, 230,103 and 95,132.64
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.