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Finding the Fourth Proportional to 202,625.55, 279,628.88 and 111,987.36

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Solution

The fourth proportional to 202,625.55, 279,628.88 and 111,987.36 is: 154,545.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,625.55 : 279,628.88 = 111,987.36 : x
  2. Step 2: Convert to fraction form
    202,625.55/279,628.88 = 111,987.36/x
  3. Step 3: Cross multiply
    202,625.55x = 279,628.88 × 111,987.36
  4. Step 4: Simplify right side
    202,625.55x = 31,314,899,491.02
  5. Step 5: Solve for x
    x = 31,314,899,491.02/202,625.55
  6. Step 6: Final answer
    x = 154,545.66

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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.