Home / 78,662,206.64-108,519,407.73-75,015,192.75

Finding the Fourth Proportional to 78,662,206.64, 108,519,407.73 and 75,015,192.75

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Solution

The fourth proportional to 78,662,206.64, 108,519,407.73 and 75,015,192.75 is: 103,488,125.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,662,206.64 : 108,519,407.73 = 75,015,192.75 : x
  2. Step 2: Convert to fraction form
    78,662,206.64/108,519,407.73 = 75,015,192.75/x
  3. Step 3: Cross multiply
    78,662,206.64x = 108,519,407.73 × 75,015,192.75
  4. Step 4: Simplify right side
    78,662,206.64x = 8,140,604,287,981,790
  5. Step 5: Solve for x
    x = 8,140,604,287,981,790/78,662,206.64
  6. Step 6: Final answer
    x = 103,488,125.19

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.