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Finding the Fourth Proportional to 158,377.36, 218,560.80 and 86,759.93

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Solution

The fourth proportional to 158,377.36, 218,560.80 and 86,759.93 is: 119,728.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,377.36 : 218,560.80 = 86,759.93 : x
  2. Step 2: Convert to fraction form
    158,377.36/218,560.80 = 86,759.93/x
  3. Step 3: Cross multiply
    158,377.36x = 218,560.80 × 86,759.93
  4. Step 4: Simplify right side
    158,377.36x = 18,962,319,708.74
  5. Step 5: Solve for x
    x = 18,962,319,708.74/158,377.36
  6. Step 6: Final answer
    x = 119,728.73

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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.