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Finding the Fourth Proportional to 144,039.20, 216,058.80 and 119,107.40

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Solution

The fourth proportional to 144,039.20, 216,058.80 and 119,107.40 is: 178,661.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,039.20 : 216,058.80 = 119,107.40 : x
  2. Step 2: Convert to fraction form
    144,039.20/216,058.80 = 119,107.40/x
  3. Step 3: Cross multiply
    144,039.20x = 216,058.80 × 119,107.40
  4. Step 4: Simplify right side
    144,039.20x = 25,734,201,915.12
  5. Step 5: Solve for x
    x = 25,734,201,915.12/144,039.20
  6. Step 6: Final answer
    x = 178,661.10

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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.