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Finding the Fourth Proportional to 158,697.23, 218,988.23 and 90,700.70

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Solution

The fourth proportional to 158,697.23, 218,988.23 and 90,700.70 is: 125,158.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,697.23 : 218,988.23 = 90,700.70 : x
  2. Step 2: Convert to fraction form
    158,697.23/218,988.23 = 90,700.70/x
  3. Step 3: Cross multiply
    158,697.23x = 218,988.23 × 90,700.70
  4. Step 4: Simplify right side
    158,697.23x = 19,862,384,204.32
  5. Step 5: Solve for x
    x = 19,862,384,204.32/158,697.23
  6. Step 6: Final answer
    x = 125,158.99

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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.