Home / 138,888.36-191,665.89-75,226.14

Finding the Fourth Proportional to 138,888.36, 191,665.89 and 75,226.14

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Solution

The fourth proportional to 138,888.36, 191,665.89 and 75,226.14 is: 103,812.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,888.36 : 191,665.89 = 75,226.14 : x
  2. Step 2: Convert to fraction form
    138,888.36/191,665.89 = 75,226.14/x
  3. Step 3: Cross multiply
    138,888.36x = 191,665.89 × 75,226.14
  4. Step 4: Simplify right side
    138,888.36x = 14,418,285,074.36
  5. Step 5: Solve for x
    x = 14,418,285,074.36/138,888.36
  6. Step 6: Final answer
    x = 103,812.05

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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.