Home / 261,351.03-391,989.65-83,834.97

Finding the Fourth Proportional to 261,351.03, 391,989.65 and 83,834.97

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Solution

The fourth proportional to 261,351.03, 391,989.65 and 83,834.97 is: 125,740.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,351.03 : 391,989.65 = 83,834.97 : x
  2. Step 2: Convert to fraction form
    261,351.03/391,989.65 = 83,834.97/x
  3. Step 3: Cross multiply
    261,351.03x = 391,989.65 × 83,834.97
  4. Step 4: Simplify right side
    261,351.03x = 32,862,440,128.89
  5. Step 5: Solve for x
    x = 32,862,440,128.89/261,351.03
  6. Step 6: Final answer
    x = 125,740.62

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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.