Home / 139,049.06-191,887.79-75,387.11

Finding the Fourth Proportional to 139,049.06, 191,887.79 and 75,387.11

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Solution

The fourth proportional to 139,049.06, 191,887.79 and 75,387.11 is: 104,034.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,049.06 : 191,887.79 = 75,387.11 : x
  2. Step 2: Convert to fraction form
    139,049.06/191,887.79 = 75,387.11/x
  3. Step 3: Cross multiply
    139,049.06x = 191,887.79 × 75,387.11
  4. Step 4: Simplify right side
    139,049.06x = 14,465,864,596.01
  5. Step 5: Solve for x
    x = 14,465,864,596.01/139,049.06
  6. Step 6: Final answer
    x = 104,034.25

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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.