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Finding the Fourth Proportional to 128,541.63, 192,561.35 and 88,553.55

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Solution

The fourth proportional to 128,541.63, 192,561.35 and 88,553.55 is: 132,657.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,541.63 : 192,561.35 = 88,553.55 : x
  2. Step 2: Convert to fraction form
    128,541.63/192,561.35 = 88,553.55/x
  3. Step 3: Cross multiply
    128,541.63x = 192,561.35 × 88,553.55
  4. Step 4: Simplify right side
    128,541.63x = 17,051,990,692.52
  5. Step 5: Solve for x
    x = 17,051,990,692.52/128,541.63
  6. Step 6: Final answer
    x = 132,657.34

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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.