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Finding the Fourth Proportional to 139,060.80, 208,153.80 and 134,686.80

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Solution

The fourth proportional to 139,060.80, 208,153.80 and 134,686.80 is: 201,606.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,060.80 : 208,153.80 = 134,686.80 : x
  2. Step 2: Convert to fraction form
    139,060.80/208,153.80 = 134,686.80/x
  3. Step 3: Cross multiply
    139,060.80x = 208,153.80 × 134,686.80
  4. Step 4: Simplify right side
    139,060.80x = 28,035,569,229.84
  5. Step 5: Solve for x
    x = 28,035,569,229.84/139,060.80
  6. Step 6: Final answer
    x = 201,606.56

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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.