Home / 103,338,143.40-155,007,215.10-68,900,766.60

Finding the Fourth Proportional to 103,338,143.40, 155,007,215.10 and 68,900,766.60

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Solution

The fourth proportional to 103,338,143.40, 155,007,215.10 and 68,900,766.60 is: 103,351,149.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,338,143.40 : 155,007,215.10 = 68,900,766.60 : x
  2. Step 2: Convert to fraction form
    103,338,143.40/155,007,215.10 = 68,900,766.60/x
  3. Step 3: Cross multiply
    103,338,143.40x = 155,007,215.10 × 68,900,766.60
  4. Step 4: Simplify right side
    103,338,143.40x = 10,680,115,948,921,094
  5. Step 5: Solve for x
    x = 10,680,115,948,921,094/103,338,143.40
  6. Step 6: Final answer
    x = 103,351,149.90

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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.