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Finding the Fourth Proportional to 105,107.20, 157,660.80 and 103,033.60

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Solution

The fourth proportional to 105,107.20, 157,660.80 and 103,033.60 is: 154,550.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,107.20 : 157,660.80 = 103,033.60 : x
  2. Step 2: Convert to fraction form
    105,107.20/157,660.80 = 103,033.60/x
  3. Step 3: Cross multiply
    105,107.20x = 157,660.80 × 103,033.60
  4. Step 4: Simplify right side
    105,107.20x = 16,244,359,802.88
  5. Step 5: Solve for x
    x = 16,244,359,802.88/105,107.20
  6. Step 6: Final answer
    x = 154,550.40

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1.5x scale

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.