Home / 261,051.18-391,625.78-83,510.52

Finding the Fourth Proportional to 261,051.18, 391,625.78 and 83,510.52

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Solution

The fourth proportional to 261,051.18, 391,625.78 and 83,510.52 is: 125,281.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,051.18 : 391,625.78 = 83,510.52 : x
  2. Step 2: Convert to fraction form
    261,051.18/391,625.78 = 83,510.52/x
  3. Step 3: Cross multiply
    261,051.18x = 391,625.78 × 83,510.52
  4. Step 4: Simplify right side
    261,051.18x = 32,704,872,115.65
  5. Step 5: Solve for x
    x = 32,704,872,115.65/261,051.18
  6. Step 6: Final answer
    x = 125,281.46

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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.