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Finding the Fourth Proportional to 157,086.98, 216,780.98 and 85,467.52

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Solution

The fourth proportional to 157,086.98, 216,780.98 and 85,467.52 is: 117,945.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,086.98 : 216,780.98 = 85,467.52 : x
  2. Step 2: Convert to fraction form
    157,086.98/216,780.98 = 85,467.52/x
  3. Step 3: Cross multiply
    157,086.98x = 216,780.98 × 85,467.52
  4. Step 4: Simplify right side
    157,086.98x = 18,527,731,774.48
  5. Step 5: Solve for x
    x = 18,527,731,774.48/157,086.98
  6. Step 6: Final answer
    x = 117,945.69

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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.