Home / 109,680.12-151,350.12-61,937.64

Finding the Fourth Proportional to 109,680.12, 151,350.12 and 61,937.64

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Solution

The fourth proportional to 109,680.12, 151,350.12 and 61,937.64 is: 85,469.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,680.12 : 151,350.12 = 61,937.64 : x
  2. Step 2: Convert to fraction form
    109,680.12/151,350.12 = 61,937.64/x
  3. Step 3: Cross multiply
    109,680.12x = 151,350.12 × 61,937.64
  4. Step 4: Simplify right side
    109,680.12x = 9,374,269,246.52
  5. Step 5: Solve for x
    x = 9,374,269,246.52/109,680.12
  6. Step 6: Final answer
    x = 85,469.17

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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.