Home / 120,865.97-181,023.05-57,730.60

Finding the Fourth Proportional to 120,865.97, 181,023.05 and 57,730.60

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Solution

The fourth proportional to 120,865.97, 181,023.05 and 57,730.60 is: 86,464.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,865.97 : 181,023.05 = 57,730.60 : x
  2. Step 2: Convert to fraction form
    120,865.97/181,023.05 = 57,730.60/x
  3. Step 3: Cross multiply
    120,865.97x = 181,023.05 × 57,730.60
  4. Step 4: Simplify right side
    120,865.97x = 10,450,569,151.81
  5. Step 5: Solve for x
    x = 10,450,569,151.81/120,865.97
  6. Step 6: Final answer
    x = 86,464.11

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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.