Home / 527,496.78-791,234.01-128,139.42

Finding the Fourth Proportional to 527,496.78, 791,234.01 and 128,139.42

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Solution

The fourth proportional to 527,496.78, 791,234.01 and 128,139.42 is: 192,206.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    527,496.78 : 791,234.01 = 128,139.42 : x
  2. Step 2: Convert to fraction form
    527,496.78/791,234.01 = 128,139.42/x
  3. Step 3: Cross multiply
    527,496.78x = 791,234.01 × 128,139.42
  4. Step 4: Simplify right side
    527,496.78x = 101,388,267,125.67
  5. Step 5: Solve for x
    x = 101,388,267,125.67/527,496.78
  6. Step 6: Final answer
    x = 192,206.42

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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.