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Finding the Fourth Proportional to 105,754.95, 145,891.53 and 63,305.28

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Solution

The fourth proportional to 105,754.95, 145,891.53 and 63,305.28 is: 87,331.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,754.95 : 145,891.53 = 63,305.28 : x
  2. Step 2: Convert to fraction form
    105,754.95/145,891.53 = 63,305.28/x
  3. Step 3: Cross multiply
    105,754.95x = 145,891.53 × 63,305.28
  4. Step 4: Simplify right side
    105,754.95x = 9,235,704,156.28
  5. Step 5: Solve for x
    x = 9,235,704,156.28/105,754.95
  6. Step 6: Final answer
    x = 87,331.18

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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.