Home / 81,449,123.20-122,173,684.80-73,229,502.40

Finding the Fourth Proportional to 81,449,123.20, 122,173,684.80 and 73,229,502.40

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Solution

The fourth proportional to 81,449,123.20, 122,173,684.80 and 73,229,502.40 is: 109,844,253.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,449,123.20 : 122,173,684.80 = 73,229,502.40 : x
  2. Step 2: Convert to fraction form
    81,449,123.20/122,173,684.80 = 73,229,502.40/x
  3. Step 3: Cross multiply
    81,449,123.20x = 122,173,684.80 × 73,229,502.40
  4. Step 4: Simplify right side
    81,449,123.20x = 8,946,718,144,278,444
  5. Step 5: Solve for x
    x = 8,946,718,144,278,444/81,449,123.20
  6. Step 6: Final answer
    x = 109,844,253.60

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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.