Home / 82,139.13-123,220.81-25,966.48

Finding the Fourth Proportional to 82,139.13, 123,220.81 and 25,966.48

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Solution

The fourth proportional to 82,139.13, 123,220.81 and 25,966.48 is: 38,953.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,139.13 : 123,220.81 = 25,966.48 : x
  2. Step 2: Convert to fraction form
    82,139.13/123,220.81 = 25,966.48/x
  3. Step 3: Cross multiply
    82,139.13x = 123,220.81 × 25,966.48
  4. Step 4: Simplify right side
    82,139.13x = 3,199,610,698.45
  5. Step 5: Solve for x
    x = 3,199,610,698.45/82,139.13
  6. Step 6: Final answer
    x = 38,953.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.