Home / 121,630.30-182,359.05-55,102.30

Finding the Fourth Proportional to 121,630.30, 182,359.05 and 55,102.30

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Solution

The fourth proportional to 121,630.30, 182,359.05 and 55,102.30 is: 82,614.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,630.30 : 182,359.05 = 55,102.30 : x
  2. Step 2: Convert to fraction form
    121,630.30/182,359.05 = 55,102.30/x
  3. Step 3: Cross multiply
    121,630.30x = 182,359.05 × 55,102.30
  4. Step 4: Simplify right side
    121,630.30x = 10,048,403,080.82
  5. Step 5: Solve for x
    x = 10,048,403,080.82/121,630.30
  6. Step 6: Final answer
    x = 82,614.31

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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.