Home / 115,780.44-159,759.90-65,478.36

Finding the Fourth Proportional to 115,780.44, 159,759.90 and 65,478.36

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Solution

The fourth proportional to 115,780.44, 159,759.90 and 65,478.36 is: 90,350.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,780.44 : 159,759.90 = 65,478.36 : x
  2. Step 2: Convert to fraction form
    115,780.44/159,759.90 = 65,478.36/x
  3. Step 3: Cross multiply
    115,780.44x = 159,759.90 × 65,478.36
  4. Step 4: Simplify right side
    115,780.44x = 10,460,816,245.76
  5. Step 5: Solve for x
    x = 10,460,816,245.76/115,780.44
  6. Step 6: Final answer
    x = 90,350.46

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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.