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Finding the Fourth Proportional to 113,539.40, 170,385.90 and 63,619.40

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Solution

The fourth proportional to 113,539.40, 170,385.90 and 63,619.40 is: 95,472.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,539.40 : 170,385.90 = 63,619.40 : x
  2. Step 2: Convert to fraction form
    113,539.40/170,385.90 = 63,619.40/x
  3. Step 3: Cross multiply
    113,539.40x = 170,385.90 × 63,619.40
  4. Step 4: Simplify right side
    113,539.40x = 10,839,848,726.46
  5. Step 5: Solve for x
    x = 10,839,848,726.46/113,539.40
  6. Step 6: Final answer
    x = 95,472.13

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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.