Home / 131,409.20-181,336.20-74,820.08

Finding the Fourth Proportional to 131,409.20, 181,336.20 and 74,820.08

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Solution

The fourth proportional to 131,409.20, 181,336.20 and 74,820.08 is: 103,246.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,409.20 : 181,336.20 = 74,820.08 : x
  2. Step 2: Convert to fraction form
    131,409.20/181,336.20 = 74,820.08/x
  3. Step 3: Cross multiply
    131,409.20x = 181,336.20 × 74,820.08
  4. Step 4: Simplify right side
    131,409.20x = 13,567,588,990.90
  5. Step 5: Solve for x
    x = 13,567,588,990.90/131,409.20
  6. Step 6: Final answer
    x = 103,246.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.