Home / 131,780.35-181,856.64-71,351.05

Finding the Fourth Proportional to 131,780.35, 181,856.64 and 71,351.05

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Solution

The fourth proportional to 131,780.35, 181,856.64 and 71,351.05 is: 98,464.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,780.35 : 181,856.64 = 71,351.05 : x
  2. Step 2: Convert to fraction form
    131,780.35/181,856.64 = 71,351.05/x
  3. Step 3: Cross multiply
    131,780.35x = 181,856.64 × 71,351.05
  4. Step 4: Simplify right side
    131,780.35x = 12,975,662,213.47
  5. Step 5: Solve for x
    x = 12,975,662,213.47/131,780.35
  6. Step 6: Final answer
    x = 98,464.32

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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.