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Finding the Fourth Proportional to 158,693.60, 218,983.02 and 90,697.08

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Solution

The fourth proportional to 158,693.60, 218,983.02 and 90,697.08 is: 125,153.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,693.60 : 218,983.02 = 90,697.08 : x
  2. Step 2: Convert to fraction form
    158,693.60/218,983.02 = 90,697.08/x
  3. Step 3: Cross multiply
    158,693.60x = 218,983.02 × 90,697.08
  4. Step 4: Simplify right side
    158,693.60x = 19,861,120,483.58
  5. Step 5: Solve for x
    x = 19,861,120,483.58/158,693.60
  6. Step 6: Final answer
    x = 125,153.88

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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.