Home / 131,336.32-181,243.20-71,720.32

Finding the Fourth Proportional to 131,336.32, 181,243.20 and 71,720.32

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Solution

The fourth proportional to 131,336.32, 181,243.20 and 71,720.32 is: 98,973.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,336.32 : 181,243.20 = 71,720.32 : x
  2. Step 2: Convert to fraction form
    131,336.32/181,243.20 = 71,720.32/x
  3. Step 3: Cross multiply
    131,336.32x = 181,243.20 × 71,720.32
  4. Step 4: Simplify right side
    131,336.32x = 12,998,820,301.82
  5. Step 5: Solve for x
    x = 12,998,820,301.82/131,336.32
  6. Step 6: Final answer
    x = 98,973.54

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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.