Home / 121,100.10-181,520.55-54,528.90

Finding the Fourth Proportional to 121,100.10, 181,520.55 and 54,528.90

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Solution

The fourth proportional to 121,100.10, 181,520.55 and 54,528.90 is: 81,734.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,100.10 : 181,520.55 = 54,528.90 : x
  2. Step 2: Convert to fraction form
    121,100.10/181,520.55 = 54,528.90/x
  3. Step 3: Cross multiply
    121,100.10x = 181,520.55 × 54,528.90
  4. Step 4: Simplify right side
    121,100.10x = 9,898,115,918.90
  5. Step 5: Solve for x
    x = 9,898,115,918.90/121,100.10
  6. Step 6: Final answer
    x = 81,734.99

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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.