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Finding the Fourth Proportional to 112,596.50, 155,385.14 and 61,613.70

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Solution

The fourth proportional to 112,596.50, 155,385.14 and 61,613.70 is: 85,027.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,596.50 : 155,385.14 = 61,613.70 : x
  2. Step 2: Convert to fraction form
    112,596.50/155,385.14 = 61,613.70/x
  3. Step 3: Cross multiply
    112,596.50x = 155,385.14 × 61,613.70
  4. Step 4: Simplify right side
    112,596.50x = 9,573,853,400.42
  5. Step 5: Solve for x
    x = 9,573,853,400.42/112,596.50
  6. Step 6: Final answer
    x = 85,027.98

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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.