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Finding the Fourth Proportional to 157,360.34, 217,154.52 and 85,740.96

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Solution

The fourth proportional to 157,360.34, 217,154.52 and 85,740.96 is: 118,321.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,360.34 : 217,154.52 = 85,740.96 : x
  2. Step 2: Convert to fraction form
    157,360.34/217,154.52 = 85,740.96/x
  3. Step 3: Cross multiply
    157,360.34x = 217,154.52 × 85,740.96
  4. Step 4: Simplify right side
    157,360.34x = 18,619,037,013.14
  5. Step 5: Solve for x
    x = 18,619,037,013.14/157,360.34
  6. Step 6: Final answer
    x = 118,321.03

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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.