Home / 81,114.20-121,598.40-51,516.80

Finding the Fourth Proportional to 81,114.20, 121,598.40 and 51,516.80

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Solution

The fourth proportional to 81,114.20, 121,598.40 and 51,516.80 is: 77,228.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,114.20 : 121,598.40 = 51,516.80 : x
  2. Step 2: Convert to fraction form
    81,114.20/121,598.40 = 51,516.80/x
  3. Step 3: Cross multiply
    81,114.20x = 121,598.40 × 51,516.80
  4. Step 4: Simplify right side
    81,114.20x = 6,264,360,453.12
  5. Step 5: Solve for x
    x = 6,264,360,453.12/81,114.20
  6. Step 6: Final answer
    x = 77,228.90

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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.