Home / 128,286,486.96-192,429,726.74-59,178,843.78

Finding the Fourth Proportional to 128,286,486.96, 192,429,726.74 and 59,178,843.78

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Solution

The fourth proportional to 128,286,486.96, 192,429,726.74 and 59,178,843.78 is: 88,768,263.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,286,486.96 : 192,429,726.74 = 59,178,843.78 : x
  2. Step 2: Convert to fraction form
    128,286,486.96/192,429,726.74 = 59,178,843.78/x
  3. Step 3: Cross multiply
    128,286,486.96x = 192,429,726.74 × 59,178,843.78
  4. Step 4: Simplify right side
    128,286,486.96x = 11,387,768,737,374,550
  5. Step 5: Solve for x
    x = 11,387,768,737,374,550/128,286,486.96
  6. Step 6: Final answer
    x = 88,768,263.96

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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.