Home / 121,789.55-182,680.21-42,901.72

Finding the Fourth Proportional to 121,789.55, 182,680.21 and 42,901.72

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Solution

The fourth proportional to 121,789.55, 182,680.21 and 42,901.72 is: 64,351.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,789.55 : 182,680.21 = 42,901.72 : x
  2. Step 2: Convert to fraction form
    121,789.55/182,680.21 = 42,901.72/x
  3. Step 3: Cross multiply
    121,789.55x = 182,680.21 × 42,901.72
  4. Step 4: Simplify right side
    121,789.55x = 7,837,295,218.96
  5. Step 5: Solve for x
    x = 7,837,295,218.96/121,789.55
  6. Step 6: Final answer
    x = 64,351.13

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1.5x scale

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.