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Finding the Fourth Proportional to 147,446.40, 221,126.40 and 68,541.60

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Solution

The fourth proportional to 147,446.40, 221,126.40 and 68,541.60 is: 102,792.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,446.40 : 221,126.40 = 68,541.60 : x
  2. Step 2: Convert to fraction form
    147,446.40/221,126.40 = 68,541.60/x
  3. Step 3: Cross multiply
    147,446.40x = 221,126.40 × 68,541.60
  4. Step 4: Simplify right side
    147,446.40x = 15,156,357,258.24
  5. Step 5: Solve for x
    x = 15,156,357,258.24/147,446.40
  6. Step 6: Final answer
    x = 102,792.32

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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.