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Finding the Fourth Proportional to 158,185.60, 218,296.13 and 86,565.65

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Solution

The fourth proportional to 158,185.60, 218,296.13 and 86,565.65 is: 119,460.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,185.60 : 218,296.13 = 86,565.65 : x
  2. Step 2: Convert to fraction form
    158,185.60/218,296.13 = 86,565.65/x
  3. Step 3: Cross multiply
    158,185.60x = 218,296.13 × 86,565.65
  4. Step 4: Simplify right side
    158,185.60x = 18,896,946,385.93
  5. Step 5: Solve for x
    x = 18,896,946,385.93/158,185.60
  6. Step 6: Final answer
    x = 119,460.60

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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.