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Finding the Fourth Proportional to 128,575.65, 192,894.27 and 53,654.12

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Solution

The fourth proportional to 128,575.65, 192,894.27 and 53,654.12 is: 80,494.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,575.65 : 192,894.27 = 53,654.12 : x
  2. Step 2: Convert to fraction form
    128,575.65/192,894.27 = 53,654.12/x
  3. Step 3: Cross multiply
    128,575.65x = 192,894.27 × 53,654.12
  4. Step 4: Simplify right side
    128,575.65x = 10,349,572,309.89
  5. Step 5: Solve for x
    x = 10,349,572,309.89/128,575.65
  6. Step 6: Final answer
    x = 80,494.03

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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.