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Finding the Fourth Proportional to 115,059.80, 158,782.20 and 64,758.80

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Solution

The fourth proportional to 115,059.80, 158,782.20 and 64,758.80 is: 89,366.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,059.80 : 158,782.20 = 64,758.80 : x
  2. Step 2: Convert to fraction form
    115,059.80/158,782.20 = 64,758.80/x
  3. Step 3: Cross multiply
    115,059.80x = 158,782.20 × 64,758.80
  4. Step 4: Simplify right side
    115,059.80x = 10,282,544,733.36
  5. Step 5: Solve for x
    x = 10,282,544,733.36/115,059.80
  6. Step 6: Final answer
    x = 89,366.96

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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.