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Finding the Fourth Proportional to 128,053.80, 192,074.30 and 65,730.60

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Solution

The fourth proportional to 128,053.80, 192,074.30 and 65,730.60 is: 98,592.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,053.80 : 192,074.30 = 65,730.60 : x
  2. Step 2: Convert to fraction form
    128,053.80/192,074.30 = 65,730.60/x
  3. Step 3: Cross multiply
    128,053.80x = 192,074.30 × 65,730.60
  4. Step 4: Simplify right side
    128,053.80x = 12,625,158,983.58
  5. Step 5: Solve for x
    x = 12,625,158,983.58/128,053.80
  6. Step 6: Final answer
    x = 98,592.61

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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.