Home / 261,072.40-391,608.60-83,585.20

Finding the Fourth Proportional to 261,072.40, 391,608.60 and 83,585.20

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Solution

The fourth proportional to 261,072.40, 391,608.60 and 83,585.20 is: 125,377.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,072.40 : 391,608.60 = 83,585.20 : x
  2. Step 2: Convert to fraction form
    261,072.40/391,608.60 = 83,585.20/x
  3. Step 3: Cross multiply
    261,072.40x = 391,608.60 × 83,585.20
  4. Step 4: Simplify right side
    261,072.40x = 32,732,683,152.72
  5. Step 5: Solve for x
    x = 32,732,683,152.72/261,072.40
  6. Step 6: Final answer
    x = 125,377.80

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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.