Home / 121,647.12-182,489.40-42,743.76

Finding the Fourth Proportional to 121,647.12, 182,489.40 and 42,743.76

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Solution

The fourth proportional to 121,647.12, 182,489.40 and 42,743.76 is: 64,122.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,647.12 : 182,489.40 = 42,743.76 : x
  2. Step 2: Convert to fraction form
    121,647.12/182,489.40 = 42,743.76/x
  3. Step 3: Cross multiply
    121,647.12x = 182,489.40 × 42,743.76
  4. Step 4: Simplify right side
    121,647.12x = 7,800,283,116.14
  5. Step 5: Solve for x
    x = 7,800,283,116.14/121,647.12
  6. Step 6: Final answer
    x = 64,122.22

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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.