Home / 138,943.64-191,587.20-100,627.40

Finding the Fourth Proportional to 138,943.64, 191,587.20 and 100,627.40

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Solution

The fourth proportional to 138,943.64, 191,587.20 and 100,627.40 is: 138,753.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,943.64 : 191,587.20 = 100,627.40 : x
  2. Step 2: Convert to fraction form
    138,943.64/191,587.20 = 100,627.40/x
  3. Step 3: Cross multiply
    138,943.64x = 191,587.20 × 100,627.40
  4. Step 4: Simplify right side
    138,943.64x = 19,278,921,809.28
  5. Step 5: Solve for x
    x = 19,278,921,809.28/138,943.64
  6. Step 6: Final answer
    x = 138,753.54

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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.