Home / 80,919,167.40-121,378,751.10-74,223,010.80

Finding the Fourth Proportional to 80,919,167.40, 121,378,751.10 and 74,223,010.80

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Solution

The fourth proportional to 80,919,167.40, 121,378,751.10 and 74,223,010.80 is: 111,334,516.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,919,167.40 : 121,378,751.10 = 74,223,010.80 : x
  2. Step 2: Convert to fraction form
    80,919,167.40/121,378,751.10 = 74,223,010.80/x
  3. Step 3: Cross multiply
    80,919,167.40x = 121,378,751.10 × 74,223,010.80
  4. Step 4: Simplify right side
    80,919,167.40x = 9,009,096,353,785,812
  5. Step 5: Solve for x
    x = 9,009,096,353,785,812/80,919,167.40
  6. Step 6: Final answer
    x = 111,334,516.20

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1.5x scale

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.