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Finding the Fourth Proportional to 110,688.80, 166,000.80 and 39,603.20

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Solution

The fourth proportional to 110,688.80, 166,000.80 and 39,603.20 is: 59,393.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,688.80 : 166,000.80 = 39,603.20 : x
  2. Step 2: Convert to fraction form
    110,688.80/166,000.80 = 39,603.20/x
  3. Step 3: Cross multiply
    110,688.80x = 166,000.80 × 39,603.20
  4. Step 4: Simplify right side
    110,688.80x = 6,574,162,882.56
  5. Step 5: Solve for x
    x = 6,574,162,882.56/110,688.80
  6. Step 6: Final answer
    x = 59,393.21

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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.