Home / 100,809.20-139,058.16-60,499.82

Finding the Fourth Proportional to 100,809.20, 139,058.16 and 60,499.82

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Solution

The fourth proportional to 100,809.20, 139,058.16 and 60,499.82 is: 83,454.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,809.20 : 139,058.16 = 60,499.82 : x
  2. Step 2: Convert to fraction form
    100,809.20/139,058.16 = 60,499.82/x
  3. Step 3: Cross multiply
    100,809.20x = 139,058.16 × 60,499.82
  4. Step 4: Simplify right side
    100,809.20x = 8,412,993,649.53
  5. Step 5: Solve for x
    x = 8,412,993,649.53/100,809.20
  6. Step 6: Final answer
    x = 83,454.62

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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.