Home / 99,380.63-137,143.94-54,057.65

Finding the Fourth Proportional to 99,380.63, 137,143.94 and 54,057.65

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Solution

The fourth proportional to 99,380.63, 137,143.94 and 54,057.65 is: 74,598.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,380.63 : 137,143.94 = 54,057.65 : x
  2. Step 2: Convert to fraction form
    99,380.63/137,143.94 = 54,057.65/x
  3. Step 3: Cross multiply
    99,380.63x = 137,143.94 × 54,057.65
  4. Step 4: Simplify right side
    99,380.63x = 7,413,678,152.13
  5. Step 5: Solve for x
    x = 7,413,678,152.13/99,380.63
  6. Step 6: Final answer
    x = 74,598.82

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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.