Home / 121,025.20-181,537.80-87,588.40

Finding the Fourth Proportional to 121,025.20, 181,537.80 and 87,588.40

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Solution

The fourth proportional to 121,025.20, 181,537.80 and 87,588.40 is: 131,382.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,025.20 : 181,537.80 = 87,588.40 : x
  2. Step 2: Convert to fraction form
    121,025.20/181,537.80 = 87,588.40/x
  3. Step 3: Cross multiply
    121,025.20x = 181,537.80 × 87,588.40
  4. Step 4: Simplify right side
    121,025.20x = 15,900,605,441.52
  5. Step 5: Solve for x
    x = 15,900,605,441.52/121,025.20
  6. Step 6: Final answer
    x = 131,382.60

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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.