Home / 453,171.12-679,712.64-137,630.80

Finding the Fourth Proportional to 453,171.12, 679,712.64 and 137,630.80

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Solution

The fourth proportional to 453,171.12, 679,712.64 and 137,630.80 is: 206,432.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,171.12 : 679,712.64 = 137,630.80 : x
  2. Step 2: Convert to fraction form
    453,171.12/679,712.64 = 137,630.80/x
  3. Step 3: Cross multiply
    453,171.12x = 679,712.64 × 137,630.80
  4. Step 4: Simplify right side
    453,171.12x = 93,549,394,413.31
  5. Step 5: Solve for x
    x = 93,549,394,413.31/453,171.12
  6. Step 6: Final answer
    x = 206,432.82

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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.