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Finding the Fourth Proportional to 114,490.40, 171,655.60 and 67,719.20

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Solution

The fourth proportional to 114,490.40, 171,655.60 and 67,719.20 is: 101,531.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,490.40 : 171,655.60 = 67,719.20 : x
  2. Step 2: Convert to fraction form
    114,490.40/171,655.60 = 67,719.20/x
  3. Step 3: Cross multiply
    114,490.40x = 171,655.60 × 67,719.20
  4. Step 4: Simplify right side
    114,490.40x = 11,624,379,907.52
  5. Step 5: Solve for x
    x = 11,624,379,907.52/114,490.40
  6. Step 6: Final answer
    x = 101,531.48

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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.