Home / 118,306.46-163,202.15-78,005.52

Finding the Fourth Proportional to 118,306.46, 163,202.15 and 78,005.52

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Solution

The fourth proportional to 118,306.46, 163,202.15 and 78,005.52 is: 107,607.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,306.46 : 163,202.15 = 78,005.52 : x
  2. Step 2: Convert to fraction form
    118,306.46/163,202.15 = 78,005.52/x
  3. Step 3: Cross multiply
    118,306.46x = 163,202.15 × 78,005.52
  4. Step 4: Simplify right side
    118,306.46x = 12,730,668,575.87
  5. Step 5: Solve for x
    x = 12,730,668,575.87/118,306.46
  6. Step 6: Final answer
    x = 107,607.55

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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.