Home / 74,078.57-111,180.15-69,407.70

Finding the Fourth Proportional to 74,078.57, 111,180.15 and 69,407.70

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Solution

The fourth proportional to 74,078.57, 111,180.15 and 69,407.70 is: 104,169.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,078.57 : 111,180.15 = 69,407.70 : x
  2. Step 2: Convert to fraction form
    74,078.57/111,180.15 = 69,407.70/x
  3. Step 3: Cross multiply
    74,078.57x = 111,180.15 × 69,407.70
  4. Step 4: Simplify right side
    74,078.57x = 7,716,758,497.16
  5. Step 5: Solve for x
    x = 7,716,758,497.16/74,078.57
  6. Step 6: Final answer
    x = 104,169.92

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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.