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Finding the Fourth Proportional to 158,612.29, 218,864.76 and 90,633.64

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Solution

The fourth proportional to 158,612.29, 218,864.76 and 90,633.64 is: 125,062.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,612.29 : 218,864.76 = 90,633.64 : x
  2. Step 2: Convert to fraction form
    158,612.29/218,864.76 = 90,633.64/x
  3. Step 3: Cross multiply
    158,612.29x = 218,864.76 × 90,633.64
  4. Step 4: Simplify right side
    158,612.29x = 19,836,509,866.53
  5. Step 5: Solve for x
    x = 19,836,509,866.53/158,612.29
  6. Step 6: Final answer
    x = 125,062.88

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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.