Home / 128,129.55-192,199.38-48,159.45

Finding the Fourth Proportional to 128,129.55, 192,199.38 and 48,159.45

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Solution

The fourth proportional to 128,129.55, 192,199.38 and 48,159.45 is: 72,241.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,129.55 : 192,199.38 = 48,159.45 : x
  2. Step 2: Convert to fraction form
    128,129.55/192,199.38 = 48,159.45/x
  3. Step 3: Cross multiply
    128,129.55x = 192,199.38 × 48,159.45
  4. Step 4: Simplify right side
    128,129.55x = 9,256,216,431.14
  5. Step 5: Solve for x
    x = 9,256,216,431.14/128,129.55
  6. Step 6: Final answer
    x = 72,241.07

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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.