Home / 74,654.10-111,981.15-74,135.70

Finding the Fourth Proportional to 74,654.10, 111,981.15 and 74,135.70

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Solution

The fourth proportional to 74,654.10, 111,981.15 and 74,135.70 is: 111,203.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,654.10 : 111,981.15 = 74,135.70 : x
  2. Step 2: Convert to fraction form
    74,654.10/111,981.15 = 74,135.70/x
  3. Step 3: Cross multiply
    74,654.10x = 111,981.15 × 74,135.70
  4. Step 4: Simplify right side
    74,654.10x = 8,301,800,942.06
  5. Step 5: Solve for x
    x = 8,301,800,942.06/74,654.10
  6. Step 6: Final answer
    x = 111,203.55

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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.