Home / 158,276.25-218,412.61-86,642.43

Finding the Fourth Proportional to 158,276.25, 218,412.61 and 86,642.43

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Solution

The fourth proportional to 158,276.25, 218,412.61 and 86,642.43 is: 119,561.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,276.25 : 218,412.61 = 86,642.43 : x
  2. Step 2: Convert to fraction form
    158,276.25/218,412.61 = 86,642.43/x
  3. Step 3: Cross multiply
    158,276.25x = 218,412.61 × 86,642.43
  4. Step 4: Simplify right side
    158,276.25x = 18,923,799,273.04
  5. Step 5: Solve for x
    x = 18,923,799,273.04/158,276.25
  6. Step 6: Final answer
    x = 119,561.84

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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.