Home / 138,020-190,612.16-95,111.04

Finding the Fourth Proportional to 138,020, 190,612.16 and 95,111.04

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Solution

The fourth proportional to 138,020, 190,612.16 and 95,111.04 is: 131,352.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,020 : 190,612.16 = 95,111.04 : x
  2. Step 2: Convert to fraction form
    138,020/190,612.16 = 95,111.04/x
  3. Step 3: Cross multiply
    138,020x = 190,612.16 × 95,111.04
  4. Step 4: Simplify right side
    138,020x = 18,129,320,774.25
  5. Step 5: Solve for x
    x = 18,129,320,774.25/138,020
  6. Step 6: Final answer
    x = 131,352.85

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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.