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Finding the Fourth Proportional to 123,909.80, 170,995.95 and 70,204.76

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Solution

The fourth proportional to 123,909.80, 170,995.95 and 70,204.76 is: 96,882.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,909.80 : 170,995.95 = 70,204.76 : x
  2. Step 2: Convert to fraction form
    123,909.80/170,995.95 = 70,204.76/x
  3. Step 3: Cross multiply
    123,909.80x = 170,995.95 × 70,204.76
  4. Step 4: Simplify right side
    123,909.80x = 12,004,729,630.72
  5. Step 5: Solve for x
    x = 12,004,729,630.72/123,909.80
  6. Step 6: Final answer
    x = 96,882.81

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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.