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Finding the Fourth Proportional to 109,745, 151,454.58 and 61,997.12

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Solution

The fourth proportional to 109,745, 151,454.58 and 61,997.12 is: 85,559.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,745 : 151,454.58 = 61,997.12 : x
  2. Step 2: Convert to fraction form
    109,745/151,454.58 = 61,997.12/x
  3. Step 3: Cross multiply
    109,745x = 151,454.58 × 61,997.12
  4. Step 4: Simplify right side
    109,745x = 9,389,747,770.81
  5. Step 5: Solve for x
    x = 9,389,747,770.81/109,745
  6. Step 6: Final answer
    x = 85,559.69

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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.