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Finding the Fourth Proportional to 112,840.52, 155,713.90 and 65,091.04

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Solution

The fourth proportional to 112,840.52, 155,713.90 and 65,091.04 is: 89,822.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,840.52 : 155,713.90 = 65,091.04 : x
  2. Step 2: Convert to fraction form
    112,840.52/155,713.90 = 65,091.04/x
  3. Step 3: Cross multiply
    112,840.52x = 155,713.90 × 65,091.04
  4. Step 4: Simplify right side
    112,840.52x = 10,135,579,693.46
  5. Step 5: Solve for x
    x = 10,135,579,693.46/112,840.52
  6. Step 6: Final answer
    x = 89,822.16

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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.