Home / 115,378.87-159,222.50-64,391.06

Finding the Fourth Proportional to 115,378.87, 159,222.50 and 64,391.06

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Solution

The fourth proportional to 115,378.87, 159,222.50 and 64,391.06 is: 88,859.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,378.87 : 159,222.50 = 64,391.06 : x
  2. Step 2: Convert to fraction form
    115,378.87/159,222.50 = 64,391.06/x
  3. Step 3: Cross multiply
    115,378.87x = 159,222.50 × 64,391.06
  4. Step 4: Simplify right side
    115,378.87x = 10,252,505,271.33
  5. Step 5: Solve for x
    x = 10,252,505,271.33/115,378.87
  6. Step 6: Final answer
    x = 88,859.47

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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.