Home / 261,051.43-391,626.15-83,510.77

Finding the Fourth Proportional to 261,051.43, 391,626.15 and 83,510.77

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Solution

The fourth proportional to 261,051.43, 391,626.15 and 83,510.77 is: 125,281.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,051.43 : 391,626.15 = 83,510.77 : x
  2. Step 2: Convert to fraction form
    261,051.43/391,626.15 = 83,510.77/x
  3. Step 3: Cross multiply
    261,051.43x = 391,626.15 × 83,510.77
  4. Step 4: Simplify right side
    261,051.43x = 32,705,001,338.64
  5. Step 5: Solve for x
    x = 32,705,001,338.64/261,051.43
  6. Step 6: Final answer
    x = 125,281.83

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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.