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Finding the Fourth Proportional to 121,309.20, 182,059.02 and 84,130.20

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Solution

The fourth proportional to 121,309.20, 182,059.02 and 84,130.20 is: 126,261.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,309.20 : 182,059.02 = 84,130.20 : x
  2. Step 2: Convert to fraction form
    121,309.20/182,059.02 = 84,130.20/x
  3. Step 3: Cross multiply
    121,309.20x = 182,059.02 × 84,130.20
  4. Step 4: Simplify right side
    121,309.20x = 15,316,661,764.40
  5. Step 5: Solve for x
    x = 15,316,661,764.40/121,309.20
  6. Step 6: Final answer
    x = 126,261.34

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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.