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Finding the Fourth Proportional to 156,373.77, 215,792.32 and 88,381.70

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Solution

The fourth proportional to 156,373.77, 215,792.32 and 88,381.70 is: 121,964.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,373.77 : 215,792.32 = 88,381.70 : x
  2. Step 2: Convert to fraction form
    156,373.77/215,792.32 = 88,381.70/x
  3. Step 3: Cross multiply
    156,373.77x = 215,792.32 × 88,381.70
  4. Step 4: Simplify right side
    156,373.77x = 19,072,092,088.54
  5. Step 5: Solve for x
    x = 19,072,092,088.54/156,373.77
  6. Step 6: Final answer
    x = 121,964.78

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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.