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Finding the Fourth Proportional to 157,499.82, 217,354.32 and 85,881.24

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Solution

The fourth proportional to 157,499.82, 217,354.32 and 85,881.24 is: 118,518.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,499.82 : 217,354.32 = 85,881.24 : x
  2. Step 2: Convert to fraction form
    157,499.82/217,354.32 = 85,881.24/x
  3. Step 3: Cross multiply
    157,499.82x = 217,354.32 × 85,881.24
  4. Step 4: Simplify right side
    157,499.82x = 18,666,658,520.96
  5. Step 5: Solve for x
    x = 18,666,658,520.96/157,499.82
  6. Step 6: Final answer
    x = 118,518.60

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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.