Home / 138,581.06-191,247.44-77,332.62

Finding the Fourth Proportional to 138,581.06, 191,247.44 and 77,332.62

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Solution

The fourth proportional to 138,581.06, 191,247.44 and 77,332.62 is: 106,722.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,581.06 : 191,247.44 = 77,332.62 : x
  2. Step 2: Convert to fraction form
    138,581.06/191,247.44 = 77,332.62/x
  3. Step 3: Cross multiply
    138,581.06x = 191,247.44 × 77,332.62
  4. Step 4: Simplify right side
    138,581.06x = 14,789,665,603.49
  5. Step 5: Solve for x
    x = 14,789,665,603.49/138,581.06
  6. Step 6: Final answer
    x = 106,722.13

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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.