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Finding the Fourth Proportional to 202,307.76, 279,180.81 and 111,658.41

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Solution

The fourth proportional to 202,307.76, 279,180.81 and 111,658.41 is: 154,086.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,307.76 : 279,180.81 = 111,658.41 : x
  2. Step 2: Convert to fraction form
    202,307.76/279,180.81 = 111,658.41/x
  3. Step 3: Cross multiply
    202,307.76x = 279,180.81 × 111,658.41
  4. Step 4: Simplify right side
    202,307.76x = 31,172,885,347.11
  5. Step 5: Solve for x
    x = 31,172,885,347.11/202,307.76
  6. Step 6: Final answer
    x = 154,086.45

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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.