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Finding the Fourth Proportional to 138,945.93, 191,744.73 and 75,283.71

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Solution

The fourth proportional to 138,945.93, 191,744.73 and 75,283.71 is: 103,891.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,945.93 : 191,744.73 = 75,283.71 : x
  2. Step 2: Convert to fraction form
    138,945.93/191,744.73 = 75,283.71/x
  3. Step 3: Cross multiply
    138,945.93x = 191,744.73 × 75,283.71
  4. Step 4: Simplify right side
    138,945.93x = 14,435,254,647.35
  5. Step 5: Solve for x
    x = 14,435,254,647.35/138,945.93
  6. Step 6: Final answer
    x = 103,891.17

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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.