Home / 158,720.11-219,036.42-87,106.79

Finding the Fourth Proportional to 158,720.11, 219,036.42 and 87,106.79

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Solution

The fourth proportional to 158,720.11, 219,036.42 and 87,106.79 is: 120,208.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,720.11 : 219,036.42 = 87,106.79 : x
  2. Step 2: Convert to fraction form
    158,720.11/219,036.42 = 87,106.79/x
  3. Step 3: Cross multiply
    158,720.11x = 219,036.42 × 87,106.79
  4. Step 4: Simplify right side
    158,720.11x = 19,079,559,986.88
  5. Step 5: Solve for x
    x = 19,079,559,986.88/158,720.11
  6. Step 6: Final answer
    x = 120,208.84

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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.