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Finding the Fourth Proportional to 103,136.64, 154,724.40 and 73,480.92

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Solution

The fourth proportional to 103,136.64, 154,724.40 and 73,480.92 is: 110,235.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,136.64 : 154,724.40 = 73,480.92 : x
  2. Step 2: Convert to fraction form
    103,136.64/154,724.40 = 73,480.92/x
  3. Step 3: Cross multiply
    103,136.64x = 154,724.40 × 73,480.92
  4. Step 4: Simplify right side
    103,136.64x = 11,369,291,258.45
  5. Step 5: Solve for x
    x = 11,369,291,258.45/103,136.64
  6. Step 6: Final answer
    x = 110,235.23

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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.