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Finding the Fourth Proportional to 139,233.60, 208,850.40 and 122,126.40

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Solution

The fourth proportional to 139,233.60, 208,850.40 and 122,126.40 is: 183,189.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,233.60 : 208,850.40 = 122,126.40 : x
  2. Step 2: Convert to fraction form
    139,233.60/208,850.40 = 122,126.40/x
  3. Step 3: Cross multiply
    139,233.60x = 208,850.40 × 122,126.40
  4. Step 4: Simplify right side
    139,233.60x = 25,506,147,490.56
  5. Step 5: Solve for x
    x = 25,506,147,490.56/139,233.60
  6. Step 6: Final answer
    x = 183,189.60

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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.