Home / 138,135,100.32-190,625,991.96-75,411,973.68

Finding the Fourth Proportional to 138,135,100.32, 190,625,991.96 and 75,411,973.68

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Solution

The fourth proportional to 138,135,100.32, 190,625,991.96 and 75,411,973.68 is: 104,068,279.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,135,100.32 : 190,625,991.96 = 75,411,973.68 : x
  2. Step 2: Convert to fraction form
    138,135,100.32/190,625,991.96 = 75,411,973.68/x
  3. Step 3: Cross multiply
    138,135,100.32x = 190,625,991.96 × 75,411,973.68
  4. Step 4: Simplify right side
    138,135,100.32x = 14,375,482,288,411,414
  5. Step 5: Solve for x
    x = 14,375,482,288,411,414/138,135,100.32
  6. Step 6: Final answer
    x = 104,068,279.93

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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.