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Finding the Fourth Proportional to 144,038.80, 215,874.60 and 80,858.80

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Solution

The fourth proportional to 144,038.80, 215,874.60 and 80,858.80 is: 121,185.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,038.80 : 215,874.60 = 80,858.80 : x
  2. Step 2: Convert to fraction form
    144,038.80/215,874.60 = 80,858.80/x
  3. Step 3: Cross multiply
    144,038.80x = 215,874.60 × 80,858.80
  4. Step 4: Simplify right side
    144,038.80x = 17,455,361,106.48
  5. Step 5: Solve for x
    x = 17,455,361,106.48/144,038.80
  6. Step 6: Final answer
    x = 121,185.13

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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.