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Finding the Fourth Proportional to 106,989.64, 160,368.61 and 69,576.56

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Solution

The fourth proportional to 106,989.64, 160,368.61 and 69,576.56 is: 104,289.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,989.64 : 160,368.61 = 69,576.56 : x
  2. Step 2: Convert to fraction form
    106,989.64/160,368.61 = 69,576.56/x
  3. Step 3: Cross multiply
    106,989.64x = 160,368.61 × 69,576.56
  4. Step 4: Simplify right side
    106,989.64x = 11,157,896,618.56
  5. Step 5: Solve for x
    x = 11,157,896,618.56/106,989.64
  6. Step 6: Final answer
    x = 104,289.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.