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Finding the Fourth Proportional to 158,565.76, 218,820.81 and 86,944.30

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Solution

The fourth proportional to 158,565.76, 218,820.81 and 86,944.30 is: 119,983.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,565.76 : 218,820.81 = 86,944.30 : x
  2. Step 2: Convert to fraction form
    158,565.76/218,820.81 = 86,944.30/x
  3. Step 3: Cross multiply
    158,565.76x = 218,820.81 × 86,944.30
  4. Step 4: Simplify right side
    158,565.76x = 19,025,222,150.88
  5. Step 5: Solve for x
    x = 19,025,222,150.88/158,565.76
  6. Step 6: Final answer
    x = 119,983.17

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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.