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Finding the Fourth Proportional to 128,569.92, 192,853.80 and 35,075.76

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Solution

The fourth proportional to 128,569.92, 192,853.80 and 35,075.76 is: 52,613.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,569.92 : 192,853.80 = 35,075.76 : x
  2. Step 2: Convert to fraction form
    128,569.92/192,853.80 = 35,075.76/x
  3. Step 3: Cross multiply
    128,569.92x = 192,853.80 × 35,075.76
  4. Step 4: Simplify right side
    128,569.92x = 6,764,493,603.89
  5. Step 5: Solve for x
    x = 6,764,493,603.89/128,569.92
  6. Step 6: Final answer
    x = 52,613.35

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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.