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Finding the Fourth Proportional to 157,525.74, 217,390.80 and 85,909.68

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Solution

The fourth proportional to 157,525.74, 217,390.80 and 85,909.68 is: 118,558.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,525.74 : 217,390.80 = 85,909.68 : x
  2. Step 2: Convert to fraction form
    157,525.74/217,390.80 = 85,909.68/x
  3. Step 3: Cross multiply
    157,525.74x = 217,390.80 × 85,909.68
  4. Step 4: Simplify right side
    157,525.74x = 18,675,974,062.94
  5. Step 5: Solve for x
    x = 18,675,974,062.94/157,525.74
  6. Step 6: Final answer
    x = 118,558.24

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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.