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Finding the Fourth Proportional to 144,893.10, 217,339.65 and 89,520.30

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Solution

The fourth proportional to 144,893.10, 217,339.65 and 89,520.30 is: 134,280.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,893.10 : 217,339.65 = 89,520.30 : x
  2. Step 2: Convert to fraction form
    144,893.10/217,339.65 = 89,520.30/x
  3. Step 3: Cross multiply
    144,893.10x = 217,339.65 × 89,520.30
  4. Step 4: Simplify right side
    144,893.10x = 19,456,310,669.90
  5. Step 5: Solve for x
    x = 19,456,310,669.90/144,893.10
  6. Step 6: Final answer
    x = 134,280.45

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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.