Home / 109,880.49-151,617.11-72,201.45

Finding the Fourth Proportional to 109,880.49, 151,617.11 and 72,201.45

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Solution

The fourth proportional to 109,880.49, 151,617.11 and 72,201.45 is: 99,626.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,880.49 : 151,617.11 = 72,201.45 : x
  2. Step 2: Convert to fraction form
    109,880.49/151,617.11 = 72,201.45/x
  3. Step 3: Cross multiply
    109,880.49x = 151,617.11 × 72,201.45
  4. Step 4: Simplify right side
    109,880.49x = 10,946,974,825.80
  5. Step 5: Solve for x
    x = 10,946,974,825.80/109,880.49
  6. Step 6: Final answer
    x = 99,626.19

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.