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Finding the Fourth Proportional to 202,263.25, 279,123.41 and 112,839.25

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Solution

The fourth proportional to 202,263.25, 279,123.41 and 112,839.25 is: 155,718.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,263.25 : 279,123.41 = 112,839.25 : x
  2. Step 2: Convert to fraction form
    202,263.25/279,123.41 = 112,839.25/x
  3. Step 3: Cross multiply
    202,263.25x = 279,123.41 × 112,839.25
  4. Step 4: Simplify right side
    202,263.25x = 31,496,075,677.65
  5. Step 5: Solve for x
    x = 31,496,075,677.65/202,263.25
  6. Step 6: Final answer
    x = 155,718.23

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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.