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Finding the Fourth Proportional to 156,918.78, 216,498.15 and 97,337.34

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Solution

The fourth proportional to 156,918.78, 216,498.15 and 97,337.34 is: 134,294.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,918.78 : 216,498.15 = 97,337.34 : x
  2. Step 2: Convert to fraction form
    156,918.78/216,498.15 = 97,337.34/x
  3. Step 3: Cross multiply
    156,918.78x = 216,498.15 × 97,337.34
  4. Step 4: Simplify right side
    156,918.78x = 21,073,354,035.92
  5. Step 5: Solve for x
    x = 21,073,354,035.92/156,918.78
  6. Step 6: Final answer
    x = 134,294.66

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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.