Home / 261,152.10-391,763.03-103,343.67

Finding the Fourth Proportional to 261,152.10, 391,763.03 and 103,343.67

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Solution

The fourth proportional to 261,152.10, 391,763.03 and 103,343.67 is: 155,029.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,152.10 : 391,763.03 = 103,343.67 : x
  2. Step 2: Convert to fraction form
    261,152.10/391,763.03 = 103,343.67/x
  3. Step 3: Cross multiply
    261,152.10x = 391,763.03 × 103,343.67
  4. Step 4: Simplify right side
    261,152.10x = 40,486,228,773.80
  5. Step 5: Solve for x
    x = 40,486,228,773.80/261,152.10
  6. Step 6: Final answer
    x = 155,029.31

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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.