Home / 231,345.67-319,257.87-134,572.74

Finding the Fourth Proportional to 231,345.67, 319,257.87 and 134,572.74

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Solution

The fourth proportional to 231,345.67, 319,257.87 and 134,572.74 is: 185,710.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,345.67 : 319,257.87 = 134,572.74 : x
  2. Step 2: Convert to fraction form
    231,345.67/319,257.87 = 134,572.74/x
  3. Step 3: Cross multiply
    231,345.67x = 319,257.87 × 134,572.74
  4. Step 4: Simplify right side
    231,345.67x = 42,963,405,870.75
  5. Step 5: Solve for x
    x = 42,963,405,870.75/231,345.67
  6. Step 6: Final answer
    x = 185,710.87

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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.