Home / 99,439.80-137,226-54,117.84

Finding the Fourth Proportional to 99,439.80, 137,226 and 54,117.84

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Solution

The fourth proportional to 99,439.80, 137,226 and 54,117.84 is: 74,682.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,439.80 : 137,226 = 54,117.84 : x
  2. Step 2: Convert to fraction form
    99,439.80/137,226 = 54,117.84/x
  3. Step 3: Cross multiply
    99,439.80x = 137,226 × 54,117.84
  4. Step 4: Simplify right side
    99,439.80x = 7,426,374,711.84
  5. Step 5: Solve for x
    x = 7,426,374,711.84/99,439.80
  6. Step 6: Final answer
    x = 74,682.12

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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.