Home / 100,837.98-139,151.13-55,507.11

Finding the Fourth Proportional to 100,837.98, 139,151.13 and 55,507.11

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Solution

The fourth proportional to 100,837.98, 139,151.13 and 55,507.11 is: 76,596.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,837.98 : 139,151.13 = 55,507.11 : x
  2. Step 2: Convert to fraction form
    100,837.98/139,151.13 = 55,507.11/x
  3. Step 3: Cross multiply
    100,837.98x = 139,151.13 × 55,507.11
  4. Step 4: Simplify right side
    100,837.98x = 7,723,876,349.57
  5. Step 5: Solve for x
    x = 7,723,876,349.57/100,837.98
  6. Step 6: Final answer
    x = 76,596.90

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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.