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Finding the Fourth Proportional to 109,613.84, 151,259.96 and 61,860.70

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Solution

The fourth proportional to 109,613.84, 151,259.96 and 61,860.70 is: 85,363.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,613.84 : 151,259.96 = 61,860.70 : x
  2. Step 2: Convert to fraction form
    109,613.84/151,259.96 = 61,860.70/x
  3. Step 3: Cross multiply
    109,613.84x = 151,259.96 × 61,860.70
  4. Step 4: Simplify right side
    109,613.84x = 9,357,045,941.97
  5. Step 5: Solve for x
    x = 9,357,045,941.97/109,613.84
  6. Step 6: Final answer
    x = 85,363.73

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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.