Home / 121,707.30-182,427.30-42,780.90

Finding the Fourth Proportional to 121,707.30, 182,427.30 and 42,780.90

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Solution

The fourth proportional to 121,707.30, 182,427.30 and 42,780.90 is: 64,124.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,707.30 : 182,427.30 = 42,780.90 : x
  2. Step 2: Convert to fraction form
    121,707.30/182,427.30 = 42,780.90/x
  3. Step 3: Cross multiply
    121,707.30x = 182,427.30 × 42,780.90
  4. Step 4: Simplify right side
    121,707.30x = 7,804,404,078.57
  5. Step 5: Solve for x
    x = 7,804,404,078.57/121,707.30
  6. Step 6: Final answer
    x = 64,124.37

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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.