Home / 128,208,045.15-192,312,067.73-80,432,301.15

Finding the Fourth Proportional to 128,208,045.15, 192,312,067.73 and 80,432,301.15

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Solution

The fourth proportional to 128,208,045.15, 192,312,067.73 and 80,432,301.15 is: 120,648,451.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,208,045.15 : 192,312,067.73 = 80,432,301.15 : x
  2. Step 2: Convert to fraction form
    128,208,045.15/192,312,067.73 = 80,432,301.15/x
  3. Step 3: Cross multiply
    128,208,045.15x = 192,312,067.73 × 80,432,301.15
  4. Step 4: Simplify right side
    128,208,045.15x = 15,468,102,146,036,396
  5. Step 5: Solve for x
    x = 15,468,102,146,036,396/128,208,045.15
  6. Step 6: Final answer
    x = 120,648,451.73

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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.