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Finding the Fourth Proportional to 159,140.55, 219,620.91 and 87,523.17

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Solution

The fourth proportional to 159,140.55, 219,620.91 and 87,523.17 is: 120,785.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,140.55 : 219,620.91 = 87,523.17 : x
  2. Step 2: Convert to fraction form
    159,140.55/219,620.91 = 87,523.17/x
  3. Step 3: Cross multiply
    159,140.55x = 219,620.91 × 87,523.17
  4. Step 4: Simplify right side
    159,140.55x = 19,221,918,241.48
  5. Step 5: Solve for x
    x = 19,221,918,241.48/159,140.55
  6. Step 6: Final answer
    x = 120,785.80

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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.