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Finding the Fourth Proportional to 101,529.88, 152,382.31 and 70,387

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Solution

The fourth proportional to 101,529.88, 152,382.31 and 70,387 is: 105,641.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,529.88 : 152,382.31 = 70,387 : x
  2. Step 2: Convert to fraction form
    101,529.88/152,382.31 = 70,387/x
  3. Step 3: Cross multiply
    101,529.88x = 152,382.31 × 70,387
  4. Step 4: Simplify right side
    101,529.88x = 10,725,733,653.97
  5. Step 5: Solve for x
    x = 10,725,733,653.97/101,529.88
  6. Step 6: Final answer
    x = 105,641.15

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.