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Finding the Fourth Proportional to 157,373.16, 217,174.88 and 85,753.10

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Solution

The fourth proportional to 157,373.16, 217,174.88 and 85,753.10 is: 118,339.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,373.16 : 217,174.88 = 85,753.10 : x
  2. Step 2: Convert to fraction form
    157,373.16/217,174.88 = 85,753.10/x
  3. Step 3: Cross multiply
    157,373.16x = 217,174.88 × 85,753.10
  4. Step 4: Simplify right side
    157,373.16x = 18,623,417,687.49
  5. Step 5: Solve for x
    x = 18,623,417,687.49/157,373.16
  6. Step 6: Final answer
    x = 118,339.22

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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.