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Finding the Fourth Proportional to 202,713.69, 279,723.47 and 112,055.05

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Solution

The fourth proportional to 202,713.69, 279,723.47 and 112,055.05 is: 154,624.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,713.69 : 279,723.47 = 112,055.05 : x
  2. Step 2: Convert to fraction form
    202,713.69/279,723.47 = 112,055.05/x
  3. Step 3: Cross multiply
    202,713.69x = 279,723.47 × 112,055.05
  4. Step 4: Simplify right side
    202,713.69x = 31,344,427,417.02
  5. Step 5: Solve for x
    x = 31,344,427,417.02/202,713.69
  6. Step 6: Final answer
    x = 154,624.13

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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.