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Finding the Fourth Proportional to 128,557.92, 192,504.60 and 88,699.80

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Solution

The fourth proportional to 128,557.92, 192,504.60 and 88,699.80 is: 132,820.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,557.92 : 192,504.60 = 88,699.80 : x
  2. Step 2: Convert to fraction form
    128,557.92/192,504.60 = 88,699.80/x
  3. Step 3: Cross multiply
    128,557.92x = 192,504.60 × 88,699.80
  4. Step 4: Simplify right side
    128,557.92x = 17,075,119,519.08
  5. Step 5: Solve for x
    x = 17,075,119,519.08/128,557.92
  6. Step 6: Final answer
    x = 132,820.44

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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.