Home / 258,045.12-387,113.04-117,817.92

Finding the Fourth Proportional to 258,045.12, 387,113.04 and 117,817.92

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Solution

The fourth proportional to 258,045.12, 387,113.04 and 117,817.92 is: 176,747.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,045.12 : 387,113.04 = 117,817.92 : x
  2. Step 2: Convert to fraction form
    258,045.12/387,113.04 = 117,817.92/x
  3. Step 3: Cross multiply
    258,045.12x = 387,113.04 × 117,817.92
  4. Step 4: Simplify right side
    258,045.12x = 45,608,853,177.68
  5. Step 5: Solve for x
    x = 45,608,853,177.68/258,045.12
  6. Step 6: Final answer
    x = 176,747.59

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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.