Home / 115,953.54-173,680.35-78,306.61

Finding the Fourth Proportional to 115,953.54, 173,680.35 and 78,306.61

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Solution

The fourth proportional to 115,953.54, 173,680.35 and 78,306.61 is: 117,291.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,953.54 : 173,680.35 = 78,306.61 : x
  2. Step 2: Convert to fraction form
    115,953.54/173,680.35 = 78,306.61/x
  3. Step 3: Cross multiply
    115,953.54x = 173,680.35 × 78,306.61
  4. Step 4: Simplify right side
    115,953.54x = 13,600,319,432.11
  5. Step 5: Solve for x
    x = 13,600,319,432.11/115,953.54
  6. Step 6: Final answer
    x = 117,291.11

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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.