Home / 109,049.25-150,490.40-66,631.17

Finding the Fourth Proportional to 109,049.25, 150,490.40 and 66,631.17

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Solution

The fourth proportional to 109,049.25, 150,490.40 and 66,631.17 is: 91,952.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,049.25 : 150,490.40 = 66,631.17 : x
  2. Step 2: Convert to fraction form
    109,049.25/150,490.40 = 66,631.17/x
  3. Step 3: Cross multiply
    109,049.25x = 150,490.40 × 66,631.17
  4. Step 4: Simplify right side
    109,049.25x = 10,027,351,092.61
  5. Step 5: Solve for x
    x = 10,027,351,092.61/109,049.25
  6. Step 6: Final answer
    x = 91,952.50

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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.