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Finding the Fourth Proportional to 128,401.81, 192,579.93 and 34,885.69

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Solution

The fourth proportional to 128,401.81, 192,579.93 and 34,885.69 is: 52,322.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,401.81 : 192,579.93 = 34,885.69 : x
  2. Step 2: Convert to fraction form
    128,401.81/192,579.93 = 34,885.69/x
  3. Step 3: Cross multiply
    128,401.81x = 192,579.93 × 34,885.69
  4. Step 4: Simplify right side
    128,401.81x = 6,718,283,256.75
  5. Step 5: Solve for x
    x = 6,718,283,256.75/128,401.81
  6. Step 6: Final answer
    x = 52,322.34

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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.