Home / 102,665.70-153,998.55-71,172.90

Finding the Fourth Proportional to 102,665.70, 153,998.55 and 71,172.90

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Solution

The fourth proportional to 102,665.70, 153,998.55 and 71,172.90 is: 106,759.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,665.70 : 153,998.55 = 71,172.90 : x
  2. Step 2: Convert to fraction form
    102,665.70/153,998.55 = 71,172.90/x
  3. Step 3: Cross multiply
    102,665.70x = 153,998.55 × 71,172.90
  4. Step 4: Simplify right side
    102,665.70x = 10,960,523,399.30
  5. Step 5: Solve for x
    x = 10,960,523,399.30/102,665.70
  6. Step 6: Final answer
    x = 106,759.35

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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.