Home / 138,901,426.89-191,652,919.97-79,343,685.15

Finding the Fourth Proportional to 138,901,426.89, 191,652,919.97 and 79,343,685.15

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Solution

The fourth proportional to 138,901,426.89, 191,652,919.97 and 79,343,685.15 is: 109,476,549.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,901,426.89 : 191,652,919.97 = 79,343,685.15 : x
  2. Step 2: Convert to fraction form
    138,901,426.89/191,652,919.97 = 79,343,685.15/x
  3. Step 3: Cross multiply
    138,901,426.89x = 191,652,919.97 × 79,343,685.15
  4. Step 4: Simplify right side
    138,901,426.89x = 15,206,448,939,781,110
  5. Step 5: Solve for x
    x = 15,206,448,939,781,110/138,901,426.89
  6. Step 6: Final answer
    x = 109,476,549.52

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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.