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Finding the Fourth Proportional to 115,276.56, 159,082.88 and 64,975.56

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Solution

The fourth proportional to 115,276.56, 159,082.88 and 64,975.56 is: 89,666.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,276.56 : 159,082.88 = 64,975.56 : x
  2. Step 2: Convert to fraction form
    115,276.56/159,082.88 = 64,975.56/x
  3. Step 3: Cross multiply
    115,276.56x = 159,082.88 × 64,975.56
  4. Step 4: Simplify right side
    115,276.56x = 10,336,499,214.41
  5. Step 5: Solve for x
    x = 10,336,499,214.41/115,276.56
  6. Step 6: Final answer
    x = 89,666.96

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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.