Home / 168,761.40-253,142.10-105,775.80

Finding the Fourth Proportional to 168,761.40, 253,142.10 and 105,775.80

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Solution

The fourth proportional to 168,761.40, 253,142.10 and 105,775.80 is: 158,663.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,761.40 : 253,142.10 = 105,775.80 : x
  2. Step 2: Convert to fraction form
    168,761.40/253,142.10 = 105,775.80/x
  3. Step 3: Cross multiply
    168,761.40x = 253,142.10 × 105,775.80
  4. Step 4: Simplify right side
    168,761.40x = 26,776,308,141.18
  5. Step 5: Solve for x
    x = 26,776,308,141.18/168,761.40
  6. Step 6: Final answer
    x = 158,663.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.