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Finding the Fourth Proportional to 156,090.16, 215,404.95 and 84,470.16

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Solution

The fourth proportional to 156,090.16, 215,404.95 and 84,470.16 is: 116,569.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,090.16 : 215,404.95 = 84,470.16 : x
  2. Step 2: Convert to fraction form
    156,090.16/215,404.95 = 84,470.16/x
  3. Step 3: Cross multiply
    156,090.16x = 215,404.95 × 84,470.16
  4. Step 4: Simplify right side
    156,090.16x = 18,195,290,591.29
  5. Step 5: Solve for x
    x = 18,195,290,591.29/156,090.16
  6. Step 6: Final answer
    x = 116,569.11

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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.