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Finding the Fourth Proportional to 100,019.30, 140,260.30 and 100,019.30

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Solution

The fourth proportional to 100,019.30, 140,260.30 and 100,019.30 is: 140,260.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,019.30 : 140,260.30 = 100,019.30 : x
  2. Step 2: Convert to fraction form
    100,019.30/140,260.30 = 100,019.30/x
  3. Step 3: Cross multiply
    100,019.30x = 140,260.30 × 100,019.30
  4. Step 4: Simplify right side
    100,019.30x = 14,028,737,023.79
  5. Step 5: Solve for x
    x = 14,028,737,023.79/100,019.30
  6. Step 6: Final answer
    x = 140,260.30

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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.