Home / 261,139.28-391,718.21-83,623.23

Finding the Fourth Proportional to 261,139.28, 391,718.21 and 83,623.23

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Solution

The fourth proportional to 261,139.28, 391,718.21 and 83,623.23 is: 125,437.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,139.28 : 391,718.21 = 83,623.23 : x
  2. Step 2: Convert to fraction form
    261,139.28/391,718.21 = 83,623.23/x
  3. Step 3: Cross multiply
    261,139.28x = 391,718.21 × 83,623.23
  4. Step 4: Simplify right side
    261,139.28x = 32,756,739,593.31
  5. Step 5: Solve for x
    x = 32,756,739,593.31/261,139.28
  6. Step 6: Final answer
    x = 125,437.81

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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.