Home / 138,670.12-191,255.94-119,581.48

Finding the Fourth Proportional to 138,670.12, 191,255.94 and 119,581.48

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Solution

The fourth proportional to 138,670.12, 191,255.94 and 119,581.48 is: 164,928.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,670.12 : 191,255.94 = 119,581.48 : x
  2. Step 2: Convert to fraction form
    138,670.12/191,255.94 = 119,581.48/x
  3. Step 3: Cross multiply
    138,670.12x = 191,255.94 × 119,581.48
  4. Step 4: Simplify right side
    138,670.12x = 22,870,668,363.99
  5. Step 5: Solve for x
    x = 22,870,668,363.99/138,670.12
  6. Step 6: Final answer
    x = 164,928.60

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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.