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Finding the Fourth Proportional to 202,175.70, 279,002.46 and 111,531.87

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Solution

The fourth proportional to 202,175.70, 279,002.46 and 111,531.87 is: 153,913.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,175.70 : 279,002.46 = 111,531.87 : x
  2. Step 2: Convert to fraction form
    202,175.70/279,002.46 = 111,531.87/x
  3. Step 3: Cross multiply
    202,175.70x = 279,002.46 × 111,531.87
  4. Step 4: Simplify right side
    202,175.70x = 31,117,666,098.40
  5. Step 5: Solve for x
    x = 31,117,666,098.40/202,175.70
  6. Step 6: Final answer
    x = 153,913.98

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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.