Home / 144,292,388.90-199,118,162.06-78,211,468.38

Finding the Fourth Proportional to 144,292,388.90, 199,118,162.06 and 78,211,468.38

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Solution

The fourth proportional to 144,292,388.90, 199,118,162.06 and 78,211,468.38 is: 107,928,934.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,292,388.90 : 199,118,162.06 = 78,211,468.38 : x
  2. Step 2: Convert to fraction form
    144,292,388.90/199,118,162.06 = 78,211,468.38/x
  3. Step 3: Cross multiply
    144,292,388.90x = 199,118,162.06 × 78,211,468.38
  4. Step 4: Simplify right side
    144,292,388.90x = 15,573,323,835,741,640
  5. Step 5: Solve for x
    x = 15,573,323,835,741,640/144,292,388.90
  6. Step 6: Final answer
    x = 107,928,934.82

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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.