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Finding the Fourth Proportional to 157,581.70, 217,462.75 and 85,962.01

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Solution

The fourth proportional to 157,581.70, 217,462.75 and 85,962.01 is: 118,627.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,581.70 : 217,462.75 = 85,962.01 : x
  2. Step 2: Convert to fraction form
    157,581.70/217,462.75 = 85,962.01/x
  3. Step 3: Cross multiply
    157,581.70x = 217,462.75 × 85,962.01
  4. Step 4: Simplify right side
    157,581.70x = 18,693,534,981.08
  5. Step 5: Solve for x
    x = 18,693,534,981.08/157,581.70
  6. Step 6: Final answer
    x = 118,627.57

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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.