Home / 138,218.70-190,747.94-77,793.26

Finding the Fourth Proportional to 138,218.70, 190,747.94 and 77,793.26

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Solution

The fourth proportional to 138,218.70, 190,747.94 and 77,793.26 is: 107,358.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,218.70 : 190,747.94 = 77,793.26 : x
  2. Step 2: Convert to fraction form
    138,218.70/190,747.94 = 77,793.26/x
  3. Step 3: Cross multiply
    138,218.70x = 190,747.94 × 77,793.26
  4. Step 4: Simplify right side
    138,218.70x = 14,838,904,762.24
  5. Step 5: Solve for x
    x = 14,838,904,762.24/138,218.70
  6. Step 6: Final answer
    x = 107,358.16

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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.