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Finding the Fourth Proportional to 139,850.20, 209,848.20 and 60,972.40

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Solution

The fourth proportional to 139,850.20, 209,848.20 and 60,972.40 is: 91,490.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,850.20 : 209,848.20 = 60,972.40 : x
  2. Step 2: Convert to fraction form
    139,850.20/209,848.20 = 60,972.40/x
  3. Step 3: Cross multiply
    139,850.20x = 209,848.20 × 60,972.40
  4. Step 4: Simplify right side
    139,850.20x = 12,794,948,389.68
  5. Step 5: Solve for x
    x = 12,794,948,389.68/139,850.20
  6. Step 6: Final answer
    x = 91,490.38

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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.