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Finding the Fourth Proportional to 115,639.93, 159,609.72 and 75,283.37

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Solution

The fourth proportional to 115,639.93, 159,609.72 and 75,283.37 is: 103,908.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,639.93 : 159,609.72 = 75,283.37 : x
  2. Step 2: Convert to fraction form
    115,639.93/159,609.72 = 75,283.37/x
  3. Step 3: Cross multiply
    115,639.93x = 159,609.72 × 75,283.37
  4. Step 4: Simplify right side
    115,639.93x = 12,015,957,606.36
  5. Step 5: Solve for x
    x = 12,015,957,606.36/115,639.93
  6. Step 6: Final answer
    x = 103,908.38

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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.