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Finding the Fourth Proportional to 114,492.40, 171,658.60 and 67,721.20

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Solution

The fourth proportional to 114,492.40, 171,658.60 and 67,721.20 is: 101,534.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,492.40 : 171,658.60 = 67,721.20 : x
  2. Step 2: Convert to fraction form
    114,492.40/171,658.60 = 67,721.20/x
  3. Step 3: Cross multiply
    114,492.40x = 171,658.60 × 67,721.20
  4. Step 4: Simplify right side
    114,492.40x = 11,624,926,382.32
  5. Step 5: Solve for x
    x = 11,624,926,382.32/114,492.40
  6. Step 6: Final answer
    x = 101,534.48

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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.