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Finding the Fourth Proportional to 158,343.85, 218,460.27 and 90,311.68

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Solution

The fourth proportional to 158,343.85, 218,460.27 and 90,311.68 is: 124,599.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,343.85 : 218,460.27 = 90,311.68 : x
  2. Step 2: Convert to fraction form
    158,343.85/218,460.27 = 90,311.68/x
  3. Step 3: Cross multiply
    158,343.85x = 218,460.27 × 90,311.68
  4. Step 4: Simplify right side
    158,343.85x = 19,729,513,996.95
  5. Step 5: Solve for x
    x = 19,729,513,996.95/158,343.85
  6. Step 6: Final answer
    x = 124,599.18

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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.