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Finding the Fourth Proportional to 158,646.25, 218,927.82 and 90,658.90

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Solution

The fourth proportional to 158,646.25, 218,927.82 and 90,658.90 is: 125,106.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,646.25 : 218,927.82 = 90,658.90 : x
  2. Step 2: Convert to fraction form
    158,646.25/218,927.82 = 90,658.90/x
  3. Step 3: Cross multiply
    158,646.25x = 218,927.82 × 90,658.90
  4. Step 4: Simplify right side
    158,646.25x = 19,847,755,340.60
  5. Step 5: Solve for x
    x = 19,847,755,340.60/158,646.25
  6. Step 6: Final answer
    x = 125,106.99

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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.