Home / 128,948,008.20-193,422,012.30-117,043,729.80

Finding the Fourth Proportional to 128,948,008.20, 193,422,012.30 and 117,043,729.80

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Solution

The fourth proportional to 128,948,008.20, 193,422,012.30 and 117,043,729.80 is: 175,565,594.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,948,008.20 : 193,422,012.30 = 117,043,729.80 : x
  2. Step 2: Convert to fraction form
    128,948,008.20/193,422,012.30 = 117,043,729.80/x
  3. Step 3: Cross multiply
    128,948,008.20x = 193,422,012.30 × 117,043,729.80
  4. Step 4: Simplify right side
    128,948,008.20x = 22,638,833,745,013,476
  5. Step 5: Solve for x
    x = 22,638,833,745,013,476/128,948,008.20
  6. Step 6: Final answer
    x = 175,565,594.70

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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.