Home / 138,943,820.75-208,152,664.19-92,746,390.91

Finding the Fourth Proportional to 138,943,820.75, 208,152,664.19 and 92,746,390.91

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Solution

The fourth proportional to 138,943,820.75, 208,152,664.19 and 92,746,390.91 is: 138,943,986.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,943,820.75 : 208,152,664.19 = 92,746,390.91 : x
  2. Step 2: Convert to fraction form
    138,943,820.75/208,152,664.19 = 92,746,390.91/x
  3. Step 3: Cross multiply
    138,943,820.75x = 208,152,664.19 × 92,746,390.91
  4. Step 4: Simplify right side
    138,943,820.75x = 19,305,408,361,980,348
  5. Step 5: Solve for x
    x = 19,305,408,361,980,348/138,943,820.75
  6. Step 6: Final answer
    x = 138,943,986.55

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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.