Home / 123,856.27-170,921.97-72,870.92

Finding the Fourth Proportional to 123,856.27, 170,921.97 and 72,870.92

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Solution

The fourth proportional to 123,856.27, 170,921.97 and 72,870.92 is: 100,562.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,856.27 : 170,921.97 = 72,870.92 : x
  2. Step 2: Convert to fraction form
    123,856.27/170,921.97 = 72,870.92/x
  3. Step 3: Cross multiply
    123,856.27x = 170,921.97 × 72,870.92
  4. Step 4: Simplify right side
    123,856.27x = 12,455,241,202.11
  5. Step 5: Solve for x
    x = 12,455,241,202.11/123,856.27
  6. Step 6: Final answer
    x = 100,562.06

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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.