Home / 138,411.42-191,008.26-83,945.40

Finding the Fourth Proportional to 138,411.42, 191,008.26 and 83,945.40

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Solution

The fourth proportional to 138,411.42, 191,008.26 and 83,945.40 is: 115,844.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,411.42 : 191,008.26 = 83,945.40 : x
  2. Step 2: Convert to fraction form
    138,411.42/191,008.26 = 83,945.40/x
  3. Step 3: Cross multiply
    138,411.42x = 191,008.26 × 83,945.40
  4. Step 4: Simplify right side
    138,411.42x = 16,034,264,789.00
  5. Step 5: Solve for x
    x = 16,034,264,789.00/138,411.42
  6. Step 6: Final answer
    x = 115,844.96

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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.