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Finding the Fourth Proportional to 141,957.68, 195,894.36 and 81,486.32

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Solution

The fourth proportional to 141,957.68, 195,894.36 and 81,486.32 is: 112,446.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,957.68 : 195,894.36 = 81,486.32 : x
  2. Step 2: Convert to fraction form
    141,957.68/195,894.36 = 81,486.32/x
  3. Step 3: Cross multiply
    141,957.68x = 195,894.36 × 81,486.32
  4. Step 4: Simplify right side
    141,957.68x = 15,962,710,505.16
  5. Step 5: Solve for x
    x = 15,962,710,505.16/141,957.68
  6. Step 6: Final answer
    x = 112,446.97

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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.