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Finding the Fourth Proportional to 157,325.92, 217,108.80 and 85,705.76

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Solution

The fourth proportional to 157,325.92, 217,108.80 and 85,705.76 is: 118,273.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,325.92 : 217,108.80 = 85,705.76 : x
  2. Step 2: Convert to fraction form
    157,325.92/217,108.80 = 85,705.76/x
  3. Step 3: Cross multiply
    157,325.92x = 217,108.80 × 85,705.76
  4. Step 4: Simplify right side
    157,325.92x = 18,607,474,706.69
  5. Step 5: Solve for x
    x = 18,607,474,706.69/157,325.92
  6. Step 6: Final answer
    x = 118,273.42

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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.