Home / 138,876.81-191,650.26-75,214.62

Finding the Fourth Proportional to 138,876.81, 191,650.26 and 75,214.62

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Solution

The fourth proportional to 138,876.81, 191,650.26 and 75,214.62 is: 103,796.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,876.81 : 191,650.26 = 75,214.62 : x
  2. Step 2: Convert to fraction form
    138,876.81/191,650.26 = 75,214.62/x
  3. Step 3: Cross multiply
    138,876.81x = 191,650.26 × 75,214.62
  4. Step 4: Simplify right side
    138,876.81x = 14,414,901,478.80
  5. Step 5: Solve for x
    x = 14,414,901,478.80/138,876.81
  6. Step 6: Final answer
    x = 103,796.32

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1.5x scale

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.