Home / 128,632.11-192,845.12-61,130.26

Finding the Fourth Proportional to 128,632.11, 192,845.12 and 61,130.26

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Solution

The fourth proportional to 128,632.11, 192,845.12 and 61,130.26 is: 91,646.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,632.11 : 192,845.12 = 61,130.26 : x
  2. Step 2: Convert to fraction form
    128,632.11/192,845.12 = 61,130.26/x
  3. Step 3: Cross multiply
    128,632.11x = 192,845.12 × 61,130.26
  4. Step 4: Simplify right side
    128,632.11x = 11,788,672,260.74
  5. Step 5: Solve for x
    x = 11,788,672,260.74/128,632.11
  6. Step 6: Final answer
    x = 91,646.42

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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.