Home / 78,129,159.14-117,182,331-22,782,121.38

Finding the Fourth Proportional to 78,129,159.14, 117,182,331 and 22,782,121.38

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Solution

The fourth proportional to 78,129,159.14, 117,182,331 and 22,782,121.38 is: 34,169,855.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,129,159.14 : 117,182,331 = 22,782,121.38 : x
  2. Step 2: Convert to fraction form
    78,129,159.14/117,182,331 = 22,782,121.38/x
  3. Step 3: Cross multiply
    78,129,159.14x = 117,182,331 × 22,782,121.38
  4. Step 4: Simplify right side
    78,129,159.14x = 2,669,662,088,433,336.50
  5. Step 5: Solve for x
    x = 2,669,662,088,433,336.50/78,129,159.14
  6. Step 6: Final answer
    x = 34,169,855.63

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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.