Home / 138,055,674.88-190,515,335.68-76,178,621.44

Finding the Fourth Proportional to 138,055,674.88, 190,515,335.68 and 76,178,621.44

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Solution

The fourth proportional to 138,055,674.88, 190,515,335.68 and 76,178,621.44 is: 105,125,672.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,055,674.88 : 190,515,335.68 = 76,178,621.44 : x
  2. Step 2: Convert to fraction form
    138,055,674.88/190,515,335.68 = 76,178,621.44/x
  3. Step 3: Cross multiply
    138,055,674.88x = 190,515,335.68 × 76,178,621.44
  4. Step 4: Simplify right side
    138,055,674.88x = 14,513,195,635,281,246
  5. Step 5: Solve for x
    x = 14,513,195,635,281,246/138,055,674.88
  6. Step 6: Final answer
    x = 105,125,672.29

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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.