Home / 115,646.26-159,618.51-75,289.75

Finding the Fourth Proportional to 115,646.26, 159,618.51 and 75,289.75

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Solution

The fourth proportional to 115,646.26, 159,618.51 and 75,289.75 is: 103,917.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,646.26 : 159,618.51 = 75,289.75 : x
  2. Step 2: Convert to fraction form
    115,646.26/159,618.51 = 75,289.75/x
  3. Step 3: Cross multiply
    115,646.26x = 159,618.51 × 75,289.75
  4. Step 4: Simplify right side
    115,646.26x = 12,017,637,713.27
  5. Step 5: Solve for x
    x = 12,017,637,713.27/115,646.26
  6. Step 6: Final answer
    x = 103,917.22

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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.