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Finding the Fourth Proportional to 158,530.80, 218,776.68 and 89,614.80

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Solution

The fourth proportional to 158,530.80, 218,776.68 and 89,614.80 is: 123,670.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,530.80 : 218,776.68 = 89,614.80 : x
  2. Step 2: Convert to fraction form
    158,530.80/218,776.68 = 89,614.80/x
  3. Step 3: Cross multiply
    158,530.80x = 218,776.68 × 89,614.80
  4. Step 4: Simplify right side
    158,530.80x = 19,605,628,422.86
  5. Step 5: Solve for x
    x = 19,605,628,422.86/158,530.80
  6. Step 6: Final answer
    x = 123,670.78

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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.