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Finding the Fourth Proportional to 105,346.88, 145,476.24 and 67,687.28

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Solution

The fourth proportional to 105,346.88, 145,476.24 and 67,687.28 is: 93,471.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,346.88 : 145,476.24 = 67,687.28 : x
  2. Step 2: Convert to fraction form
    105,346.88/145,476.24 = 67,687.28/x
  3. Step 3: Cross multiply
    105,346.88x = 145,476.24 × 67,687.28
  4. Step 4: Simplify right side
    105,346.88x = 9,846,890,990.23
  5. Step 5: Solve for x
    x = 9,846,890,990.23/105,346.88
  6. Step 6: Final answer
    x = 93,471.12

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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.