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Finding the Fourth Proportional to 128,222.89, 192,332.20 and 49,354.20

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Solution

The fourth proportional to 128,222.89, 192,332.20 and 49,354.20 is: 74,030.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,222.89 : 192,332.20 = 49,354.20 : x
  2. Step 2: Convert to fraction form
    128,222.89/192,332.20 = 49,354.20/x
  3. Step 3: Cross multiply
    128,222.89x = 192,332.20 × 49,354.20
  4. Step 4: Simplify right side
    128,222.89x = 9,492,401,926.93
  5. Step 5: Solve for x
    x = 9,492,401,926.93/128,222.89
  6. Step 6: Final answer
    x = 74,030.48

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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.