Home / 128,320.16-192,221.87-107,468.49

Finding the Fourth Proportional to 128,320.16, 192,221.87 and 107,468.49

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Solution

The fourth proportional to 128,320.16, 192,221.87 and 107,468.49 is: 160,986.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,320.16 : 192,221.87 = 107,468.49 : x
  2. Step 2: Convert to fraction form
    128,320.16/192,221.87 = 107,468.49/x
  3. Step 3: Cross multiply
    128,320.16x = 192,221.87 × 107,468.49
  4. Step 4: Simplify right side
    128,320.16x = 20,657,794,113.88
  5. Step 5: Solve for x
    x = 20,657,794,113.88/128,320.16
  6. Step 6: Final answer
    x = 160,986.35

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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.