Home / 129,920,451.78-179,230,124.36-115,050,929.43

Finding the Fourth Proportional to 129,920,451.78, 179,230,124.36 and 115,050,929.43

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Solution

The fourth proportional to 129,920,451.78, 179,230,124.36 and 115,050,929.43 is: 158,717,061.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,920,451.78 : 179,230,124.36 = 115,050,929.43 : x
  2. Step 2: Convert to fraction form
    129,920,451.78/179,230,124.36 = 115,050,929.43/x
  3. Step 3: Cross multiply
    129,920,451.78x = 179,230,124.36 × 115,050,929.43
  4. Step 4: Simplify right side
    129,920,451.78x = 20,620,592,389,760,112
  5. Step 5: Solve for x
    x = 20,620,592,389,760,112/129,920,451.78
  6. Step 6: Final answer
    x = 158,717,061.92

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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.