Home / 99,895.76-137,850-54,564.56

Finding the Fourth Proportional to 99,895.76, 137,850 and 54,564.56

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Solution

The fourth proportional to 99,895.76, 137,850 and 54,564.56 is: 75,295.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,895.76 : 137,850 = 54,564.56 : x
  2. Step 2: Convert to fraction form
    99,895.76/137,850 = 54,564.56/x
  3. Step 3: Cross multiply
    99,895.76x = 137,850 × 54,564.56
  4. Step 4: Simplify right side
    99,895.76x = 7,521,724,596
  5. Step 5: Solve for x
    x = 7,521,724,596/99,895.76
  6. Step 6: Final answer
    x = 75,295.73

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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.