Home / 103,431.20-155,223.60-41,146.40

Finding the Fourth Proportional to 103,431.20, 155,223.60 and 41,146.40

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Solution

The fourth proportional to 103,431.20, 155,223.60 and 41,146.40 is: 61,750.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,431.20 : 155,223.60 = 41,146.40 : x
  2. Step 2: Convert to fraction form
    103,431.20/155,223.60 = 41,146.40/x
  3. Step 3: Cross multiply
    103,431.20x = 155,223.60 × 41,146.40
  4. Step 4: Simplify right side
    103,431.20x = 6,386,892,335.04
  5. Step 5: Solve for x
    x = 6,386,892,335.04/103,431.20
  6. Step 6: Final answer
    x = 61,750.15

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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.