Home / 80,751,646.80-121,127,470.20-74,516,072.40

Finding the Fourth Proportional to 80,751,646.80, 121,127,470.20 and 74,516,072.40

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Solution

The fourth proportional to 80,751,646.80, 121,127,470.20 and 74,516,072.40 is: 111,774,108.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,751,646.80 : 121,127,470.20 = 74,516,072.40 : x
  2. Step 2: Convert to fraction form
    80,751,646.80/121,127,470.20 = 74,516,072.40/x
  3. Step 3: Cross multiply
    80,751,646.80x = 121,127,470.20 × 74,516,072.40
  4. Step 4: Simplify right side
    80,751,646.80x = 9,025,943,339,052,044
  5. Step 5: Solve for x
    x = 9,025,943,339,052,044/80,751,646.80
  6. Step 6: Final answer
    x = 111,774,108.60

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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.