Home / 115,309.64-159,121.23-64,327.70

Finding the Fourth Proportional to 115,309.64, 159,121.23 and 64,327.70

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Solution

The fourth proportional to 115,309.64, 159,121.23 and 64,327.70 is: 88,768.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,309.64 : 159,121.23 = 64,327.70 : x
  2. Step 2: Convert to fraction form
    115,309.64/159,121.23 = 64,327.70/x
  3. Step 3: Cross multiply
    115,309.64x = 159,121.23 × 64,327.70
  4. Step 4: Simplify right side
    115,309.64x = 10,235,902,747.07
  5. Step 5: Solve for x
    x = 10,235,902,747.07/115,309.64
  6. Step 6: Final answer
    x = 88,768.84

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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.