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Finding the Fourth Proportional to 158,646.38, 218,927.98 and 90,659.02

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Solution

The fourth proportional to 158,646.38, 218,927.98 and 90,659.02 is: 125,107.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,646.38 : 218,927.98 = 90,659.02 : x
  2. Step 2: Convert to fraction form
    158,646.38/218,927.98 = 90,659.02/x
  3. Step 3: Cross multiply
    158,646.38x = 218,927.98 × 90,659.02
  4. Step 4: Simplify right side
    158,646.38x = 19,847,796,117.38
  5. Step 5: Solve for x
    x = 19,847,796,117.38/158,646.38
  6. Step 6: Final answer
    x = 125,107.15

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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.