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Finding the Fourth Proportional to 158,589.52, 218,853.84 and 86,970.04

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Solution

The fourth proportional to 158,589.52, 218,853.84 and 86,970.04 is: 120,018.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,589.52 : 218,853.84 = 86,970.04 : x
  2. Step 2: Convert to fraction form
    158,589.52/218,853.84 = 86,970.04/x
  3. Step 3: Cross multiply
    158,589.52x = 218,853.84 × 86,970.04
  4. Step 4: Simplify right side
    158,589.52x = 19,033,727,218.95
  5. Step 5: Solve for x
    x = 19,033,727,218.95/158,589.52
  6. Step 6: Final answer
    x = 120,018.82

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1.5x scale

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.