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Finding the Fourth Proportional to 158,294.88, 218,444.88 and 90,310.08

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Solution

The fourth proportional to 158,294.88, 218,444.88 and 90,310.08 is: 124,626.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,294.88 : 218,444.88 = 90,310.08 : x
  2. Step 2: Convert to fraction form
    158,294.88/218,444.88 = 90,310.08/x
  3. Step 3: Cross multiply
    158,294.88x = 218,444.88 × 90,310.08
  4. Step 4: Simplify right side
    158,294.88x = 19,727,774,588.39
  5. Step 5: Solve for x
    x = 19,727,774,588.39/158,294.88
  6. Step 6: Final answer
    x = 124,626.74

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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.