Home / 80,969,021.10-121,453,531.65-73,158,806.70

Finding the Fourth Proportional to 80,969,021.10, 121,453,531.65 and 73,158,806.70

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Solution

The fourth proportional to 80,969,021.10, 121,453,531.65 and 73,158,806.70 is: 109,738,210.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,969,021.10 : 121,453,531.65 = 73,158,806.70 : x
  2. Step 2: Convert to fraction form
    80,969,021.10/121,453,531.65 = 73,158,806.70/x
  3. Step 3: Cross multiply
    80,969,021.10x = 121,453,531.65 × 73,158,806.70
  4. Step 4: Simplify right side
    80,969,021.10x = 8,885,395,445,014,683
  5. Step 5: Solve for x
    x = 8,885,395,445,014,683/80,969,021.10
  6. Step 6: Final answer
    x = 109,738,210.05

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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.