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Finding the Fourth Proportional to 202,332.54, 279,218.97 and 111,688.56

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Solution

The fourth proportional to 202,332.54, 279,218.97 and 111,688.56 is: 154,130.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,332.54 : 279,218.97 = 111,688.56 : x
  2. Step 2: Convert to fraction form
    202,332.54/279,218.97 = 111,688.56/x
  3. Step 3: Cross multiply
    202,332.54x = 279,218.97 × 111,688.56
  4. Step 4: Simplify right side
    202,332.54x = 31,185,564,683.98
  5. Step 5: Solve for x
    x = 31,185,564,683.98/202,332.54
  6. Step 6: Final answer
    x = 154,130.25

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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.