Home / 99,363.12-137,121.68-54,041.52

Finding the Fourth Proportional to 99,363.12, 137,121.68 and 54,041.52

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Solution

The fourth proportional to 99,363.12, 137,121.68 and 54,041.52 is: 74,577.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,363.12 : 137,121.68 = 54,041.52 : x
  2. Step 2: Convert to fraction form
    99,363.12/137,121.68 = 54,041.52/x
  3. Step 3: Cross multiply
    99,363.12x = 137,121.68 × 54,041.52
  4. Step 4: Simplify right side
    99,363.12x = 7,410,264,012.15
  5. Step 5: Solve for x
    x = 7,410,264,012.15/99,363.12
  6. Step 6: Final answer
    x = 74,577.61

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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.