Home / 128,503,726.85-192,773,892.72-39,879,954.47

Finding the Fourth Proportional to 128,503,726.85, 192,773,892.72 and 39,879,954.47

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Solution

The fourth proportional to 128,503,726.85, 192,773,892.72 and 39,879,954.47 is: 59,825,611.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,503,726.85 : 192,773,892.72 = 39,879,954.47 : x
  2. Step 2: Convert to fraction form
    128,503,726.85/192,773,892.72 = 39,879,954.47/x
  3. Step 3: Cross multiply
    128,503,726.85x = 192,773,892.72 × 39,879,954.47
  4. Step 4: Simplify right side
    128,503,726.85x = 7,687,814,064,678,264
  5. Step 5: Solve for x
    x = 7,687,814,064,678,264/128,503,726.85
  6. Step 6: Final answer
    x = 59,825,611.70

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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.