Home / 138,340.48-190,919.15-77,096.18

Finding the Fourth Proportional to 138,340.48, 190,919.15 and 77,096.18

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Solution

The fourth proportional to 138,340.48, 190,919.15 and 77,096.18 is: 106,397.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,340.48 : 190,919.15 = 77,096.18 : x
  2. Step 2: Convert to fraction form
    138,340.48/190,919.15 = 77,096.18/x
  3. Step 3: Cross multiply
    138,340.48x = 190,919.15 × 77,096.18
  4. Step 4: Simplify right side
    138,340.48x = 14,719,137,153.85
  5. Step 5: Solve for x
    x = 14,719,137,153.85/138,340.48
  6. Step 6: Final answer
    x = 106,397.90

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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.