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Finding the Fourth Proportional to 101,489.40, 142,396.20 and 101,489.40

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Solution

The fourth proportional to 101,489.40, 142,396.20 and 101,489.40 is: 142,396.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,489.40 : 142,396.20 = 101,489.40 : x
  2. Step 2: Convert to fraction form
    101,489.40/142,396.20 = 101,489.40/x
  3. Step 3: Cross multiply
    101,489.40x = 142,396.20 × 101,489.40
  4. Step 4: Simplify right side
    101,489.40x = 14,451,704,900.28
  5. Step 5: Solve for x
    x = 14,451,704,900.28/101,489.40
  6. Step 6: Final answer
    x = 142,396.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.