Home / 128,948,007.20-193,422,010.80-117,043,728.80

Finding the Fourth Proportional to 128,948,007.20, 193,422,010.80 and 117,043,728.80

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Solution

The fourth proportional to 128,948,007.20, 193,422,010.80 and 117,043,728.80 is: 175,565,593.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,948,007.20 : 193,422,010.80 = 117,043,728.80 : x
  2. Step 2: Convert to fraction form
    128,948,007.20/193,422,010.80 = 117,043,728.80/x
  3. Step 3: Cross multiply
    128,948,007.20x = 193,422,010.80 × 117,043,728.80
  4. Step 4: Simplify right side
    128,948,007.20x = 22,638,833,376,025,872
  5. Step 5: Solve for x
    x = 22,638,833,376,025,872/128,948,007.20
  6. Step 6: Final answer
    x = 175,565,593.20

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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.