Home / 138,398.03-206,838.64-101,036.78

Finding the Fourth Proportional to 138,398.03, 206,838.64 and 101,036.78

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Solution

The fourth proportional to 138,398.03, 206,838.64 and 101,036.78 is: 151,001.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,398.03 : 206,838.64 = 101,036.78 : x
  2. Step 2: Convert to fraction form
    138,398.03/206,838.64 = 101,036.78/x
  3. Step 3: Cross multiply
    138,398.03x = 206,838.64 × 101,036.78
  4. Step 4: Simplify right side
    138,398.03x = 20,898,310,165.18
  5. Step 5: Solve for x
    x = 20,898,310,165.18/138,398.03
  6. Step 6: Final answer
    x = 151,001.50

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.