Home / 128,960,029.20-193,440,043.80-88,145,360.40

Finding the Fourth Proportional to 128,960,029.20, 193,440,043.80 and 88,145,360.40

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Solution

The fourth proportional to 128,960,029.20, 193,440,043.80 and 88,145,360.40 is: 132,218,040.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,960,029.20 : 193,440,043.80 = 88,145,360.40 : x
  2. Step 2: Convert to fraction form
    128,960,029.20/193,440,043.80 = 88,145,360.40/x
  3. Step 3: Cross multiply
    128,960,029.20x = 193,440,043.80 × 88,145,360.40
  4. Step 4: Simplify right side
    128,960,029.20x = 17,050,842,376,542,788
  5. Step 5: Solve for x
    x = 17,050,842,376,542,788/128,960,029.20
  6. Step 6: Final answer
    x = 132,218,040.60

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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.