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Finding the Fourth Proportional to 115,439.66, 159,309.22 and 63,756.60

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Solution

The fourth proportional to 115,439.66, 159,309.22 and 63,756.60 is: 87,985.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,439.66 : 159,309.22 = 63,756.60 : x
  2. Step 2: Convert to fraction form
    115,439.66/159,309.22 = 63,756.60/x
  3. Step 3: Cross multiply
    115,439.66x = 159,309.22 × 63,756.60
  4. Step 4: Simplify right side
    115,439.66x = 10,157,014,215.85
  5. Step 5: Solve for x
    x = 10,157,014,215.85/115,439.66
  6. Step 6: Final answer
    x = 87,985.48

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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.