Home / 81,445,854.80-122,168,782.20-67,096,947.80

Finding the Fourth Proportional to 81,445,854.80, 122,168,782.20 and 67,096,947.80

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Solution

The fourth proportional to 81,445,854.80, 122,168,782.20 and 67,096,947.80 is: 100,645,421.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,445,854.80 : 122,168,782.20 = 67,096,947.80 : x
  2. Step 2: Convert to fraction form
    81,445,854.80/122,168,782.20 = 67,096,947.80/x
  3. Step 3: Cross multiply
    81,445,854.80x = 122,168,782.20 × 67,096,947.80
  4. Step 4: Simplify right side
    81,445,854.80x = 8,197,152,402,062,969
  5. Step 5: Solve for x
    x = 8,197,152,402,062,969/81,445,854.80
  6. Step 6: Final answer
    x = 100,645,421.70

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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.