Home / 99,121.91-136,788.35-53,799.89

Finding the Fourth Proportional to 99,121.91, 136,788.35 and 53,799.89

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Solution

The fourth proportional to 99,121.91, 136,788.35 and 53,799.89 is: 74,243.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,121.91 : 136,788.35 = 53,799.89 : x
  2. Step 2: Convert to fraction form
    99,121.91/136,788.35 = 53,799.89/x
  3. Step 3: Cross multiply
    99,121.91x = 136,788.35 × 53,799.89
  4. Step 4: Simplify right side
    99,121.91x = 7,359,197,230.34
  5. Step 5: Solve for x
    x = 7,359,197,230.34/99,121.91
  6. Step 6: Final answer
    x = 74,243.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.