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Finding the Fourth Proportional to 115,068.88, 159,001 and 89,640.90

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Solution

The fourth proportional to 115,068.88, 159,001 and 89,640.90 is: 123,864.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,068.88 : 159,001 = 89,640.90 : x
  2. Step 2: Convert to fraction form
    115,068.88/159,001 = 89,640.90/x
  3. Step 3: Cross multiply
    115,068.88x = 159,001 × 89,640.90
  4. Step 4: Simplify right side
    115,068.88x = 14,252,992,740.90
  5. Step 5: Solve for x
    x = 14,252,992,740.90/115,068.88
  6. Step 6: Final answer
    x = 123,864.88

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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.