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Finding the Fourth Proportional to 139,995,751.92, 209,987,645.22 and 47,887,726.20

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Solution

The fourth proportional to 139,995,751.92, 209,987,645.22 and 47,887,726.20 is: 71,829,542.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,995,751.92 : 209,987,645.22 = 47,887,726.20 : x
  2. Step 2: Convert to fraction form
    139,995,751.92/209,987,645.22 = 47,887,726.20/x
  3. Step 3: Cross multiply
    139,995,751.92x = 209,987,645.22 × 47,887,726.20
  4. Step 4: Simplify right side
    139,995,751.92x = 10,055,830,859,678,100
  5. Step 5: Solve for x
    x = 10,055,830,859,678,100/139,995,751.92
  6. Step 6: Final answer
    x = 71,829,542.84

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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.