Home / 121,909.46-182,936.87-54,436.28

Finding the Fourth Proportional to 121,909.46, 182,936.87 and 54,436.28

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Solution

The fourth proportional to 121,909.46, 182,936.87 and 54,436.28 is: 81,686.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,909.46 : 182,936.87 = 54,436.28 : x
  2. Step 2: Convert to fraction form
    121,909.46/182,936.87 = 54,436.28/x
  3. Step 3: Cross multiply
    121,909.46x = 182,936.87 × 54,436.28
  4. Step 4: Simplify right side
    121,909.46x = 9,958,402,677.64
  5. Step 5: Solve for x
    x = 9,958,402,677.64/121,909.46
  6. Step 6: Final answer
    x = 81,686.87

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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.