Home / 131,718.15-181,770.83-71,288.76

Finding the Fourth Proportional to 131,718.15, 181,770.83 and 71,288.76

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Solution

The fourth proportional to 131,718.15, 181,770.83 and 71,288.76 is: 98,378.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,718.15 : 181,770.83 = 71,288.76 : x
  2. Step 2: Convert to fraction form
    131,718.15/181,770.83 = 71,288.76/x
  3. Step 3: Cross multiply
    131,718.15x = 181,770.83 × 71,288.76
  4. Step 4: Simplify right side
    131,718.15x = 12,958,217,045.94
  5. Step 5: Solve for x
    x = 12,958,217,045.94/131,718.15
  6. Step 6: Final answer
    x = 98,378.37

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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.