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Finding the Fourth Proportional to 157,010.43, 216,672.30 and 85,388.91

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Solution

The fourth proportional to 157,010.43, 216,672.30 and 85,388.91 is: 117,835.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,010.43 : 216,672.30 = 85,388.91 : x
  2. Step 2: Convert to fraction form
    157,010.43/216,672.30 = 85,388.91/x
  3. Step 3: Cross multiply
    157,010.43x = 216,672.30 × 85,388.91
  4. Step 4: Simplify right side
    157,010.43x = 18,501,411,524.19
  5. Step 5: Solve for x
    x = 18,501,411,524.19/157,010.43
  6. Step 6: Final answer
    x = 117,835.56

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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.