Home / 115,701.09-159,620.40-75,400.17

Finding the Fourth Proportional to 115,701.09, 159,620.40 and 75,400.17

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Solution

The fourth proportional to 115,701.09, 159,620.40 and 75,400.17 is: 104,021.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,701.09 : 159,620.40 = 75,400.17 : x
  2. Step 2: Convert to fraction form
    115,701.09/159,620.40 = 75,400.17/x
  3. Step 3: Cross multiply
    115,701.09x = 159,620.40 × 75,400.17
  4. Step 4: Simplify right side
    115,701.09x = 12,035,405,295.47
  5. Step 5: Solve for x
    x = 12,035,405,295.47/115,701.09
  6. Step 6: Final answer
    x = 104,021.54

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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.