Home / 129,725,019.86-179,024,039.83-79,488,365.95

Finding the Fourth Proportional to 129,725,019.86, 179,024,039.83 and 79,488,365.95

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Solution

The fourth proportional to 129,725,019.86, 179,024,039.83 and 79,488,365.95 is: 109,696,097.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,725,019.86 : 179,024,039.83 = 79,488,365.95 : x
  2. Step 2: Convert to fraction form
    129,725,019.86/179,024,039.83 = 79,488,365.95/x
  3. Step 3: Cross multiply
    129,725,019.86x = 179,024,039.83 × 79,488,365.95
  4. Step 4: Simplify right side
    129,725,019.86x = 14,230,328,392,177,916
  5. Step 5: Solve for x
    x = 14,230,328,392,177,916/129,725,019.86
  6. Step 6: Final answer
    x = 109,696,097.24

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.