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Finding the Fourth Proportional to 121,274.20, 181,911.30 and 54,746.20

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Solution

The fourth proportional to 121,274.20, 181,911.30 and 54,746.20 is: 82,119.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,274.20 : 181,911.30 = 54,746.20 : x
  2. Step 2: Convert to fraction form
    121,274.20/181,911.30 = 54,746.20/x
  3. Step 3: Cross multiply
    121,274.20x = 181,911.30 × 54,746.20
  4. Step 4: Simplify right side
    121,274.20x = 9,958,952,412.06
  5. Step 5: Solve for x
    x = 9,958,952,412.06/121,274.20
  6. Step 6: Final answer
    x = 82,119.30

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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.