Home / 99,478.86-137,276.35-54,155.69

Finding the Fourth Proportional to 99,478.86, 137,276.35 and 54,155.69

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Solution

The fourth proportional to 99,478.86, 137,276.35 and 54,155.69 is: 74,732.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,478.86 : 137,276.35 = 54,155.69 : x
  2. Step 2: Convert to fraction form
    99,478.86/137,276.35 = 54,155.69/x
  3. Step 3: Cross multiply
    99,478.86x = 137,276.35 × 54,155.69
  4. Step 4: Simplify right side
    99,478.86x = 7,434,295,454.93
  5. Step 5: Solve for x
    x = 7,434,295,454.93/99,478.86
  6. Step 6: Final answer
    x = 74,732.42

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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.