Home / 138,700.25-191,407.73-75,039.42

Finding the Fourth Proportional to 138,700.25, 191,407.73 and 75,039.42

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Solution

The fourth proportional to 138,700.25, 191,407.73 and 75,039.42 is: 103,555.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,700.25 : 191,407.73 = 75,039.42 : x
  2. Step 2: Convert to fraction form
    138,700.25/191,407.73 = 75,039.42/x
  3. Step 3: Cross multiply
    138,700.25x = 191,407.73 × 75,039.42
  4. Step 4: Simplify right side
    138,700.25x = 14,363,125,042.72
  5. Step 5: Solve for x
    x = 14,363,125,042.72/138,700.25
  6. Step 6: Final answer
    x = 103,555.15

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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.