Home / 127,815.40-191,723.10-74,452.60

Finding the Fourth Proportional to 127,815.40, 191,723.10 and 74,452.60

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Solution

The fourth proportional to 127,815.40, 191,723.10 and 74,452.60 is: 111,678.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,815.40 : 191,723.10 = 74,452.60 : x
  2. Step 2: Convert to fraction form
    127,815.40/191,723.10 = 74,452.60/x
  3. Step 3: Cross multiply
    127,815.40x = 191,723.10 × 74,452.60
  4. Step 4: Simplify right side
    127,815.40x = 14,274,283,275.06
  5. Step 5: Solve for x
    x = 14,274,283,275.06/127,815.40
  6. Step 6: Final answer
    x = 111,678.90

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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.