Home / 115,778.36-159,782.72-64,796.20

Finding the Fourth Proportional to 115,778.36, 159,782.72 and 64,796.20

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Solution

The fourth proportional to 115,778.36, 159,782.72 and 64,796.20 is: 89,423.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,778.36 : 159,782.72 = 64,796.20 : x
  2. Step 2: Convert to fraction form
    115,778.36/159,782.72 = 64,796.20/x
  3. Step 3: Cross multiply
    115,778.36x = 159,782.72 × 64,796.20
  4. Step 4: Simplify right side
    115,778.36x = 10,353,313,081.66
  5. Step 5: Solve for x
    x = 10,353,313,081.66/115,778.36
  6. Step 6: Final answer
    x = 89,423.56

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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.