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Finding the Fourth Proportional to 158,373.30, 218,558.68 and 90,388.91

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Solution

The fourth proportional to 158,373.30, 218,558.68 and 90,388.91 is: 124,738.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,373.30 : 218,558.68 = 90,388.91 : x
  2. Step 2: Convert to fraction form
    158,373.30/218,558.68 = 90,388.91/x
  3. Step 3: Cross multiply
    158,373.30x = 218,558.68 × 90,388.91
  4. Step 4: Simplify right side
    158,373.30x = 19,755,280,856.24
  5. Step 5: Solve for x
    x = 19,755,280,856.24/158,373.30
  6. Step 6: Final answer
    x = 124,738.71

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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.