Home / 138,869.52-191,626.24-77,604.40

Finding the Fourth Proportional to 138,869.52, 191,626.24 and 77,604.40

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Solution

The fourth proportional to 138,869.52, 191,626.24 and 77,604.40 is: 107,086.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,869.52 : 191,626.24 = 77,604.40 : x
  2. Step 2: Convert to fraction form
    138,869.52/191,626.24 = 77,604.40/x
  3. Step 3: Cross multiply
    138,869.52x = 191,626.24 × 77,604.40
  4. Step 4: Simplify right side
    138,869.52x = 14,871,039,379.46
  5. Step 5: Solve for x
    x = 14,871,039,379.46/138,869.52
  6. Step 6: Final answer
    x = 107,086.42

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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.