Home / 138,868.27-191,637.79-75,206.05

Finding the Fourth Proportional to 138,868.27, 191,637.79 and 75,206.05

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Solution

The fourth proportional to 138,868.27, 191,637.79 and 75,206.05 is: 103,784.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,868.27 : 191,637.79 = 75,206.05 : x
  2. Step 2: Convert to fraction form
    138,868.27/191,637.79 = 75,206.05/x
  3. Step 3: Cross multiply
    138,868.27x = 191,637.79 × 75,206.05
  4. Step 4: Simplify right side
    138,868.27x = 14,412,320,549.52
  5. Step 5: Solve for x
    x = 14,412,320,549.52/138,868.27
  6. Step 6: Final answer
    x = 103,784.12

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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.