Home / 138,929.85-191,723.39-75,267.64

Finding the Fourth Proportional to 138,929.85, 191,723.39 and 75,267.64

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Solution

The fourth proportional to 138,929.85, 191,723.39 and 75,267.64 is: 103,869.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,929.85 : 191,723.39 = 75,267.64 : x
  2. Step 2: Convert to fraction form
    138,929.85/191,723.39 = 75,267.64/x
  3. Step 3: Cross multiply
    138,929.85x = 191,723.39 × 75,267.64
  4. Step 4: Simplify right side
    138,929.85x = 14,430,567,098.10
  5. Step 5: Solve for x
    x = 14,430,567,098.10/138,929.85
  6. Step 6: Final answer
    x = 103,869.45

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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.