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Finding the Fourth Proportional to 129,775.40, 194,663.10 and 46,658.60

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Solution

The fourth proportional to 129,775.40, 194,663.10 and 46,658.60 is: 69,987.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,775.40 : 194,663.10 = 46,658.60 : x
  2. Step 2: Convert to fraction form
    129,775.40/194,663.10 = 46,658.60/x
  3. Step 3: Cross multiply
    129,775.40x = 194,663.10 × 46,658.60
  4. Step 4: Simplify right side
    129,775.40x = 9,082,707,717.66
  5. Step 5: Solve for x
    x = 9,082,707,717.66/129,775.40
  6. Step 6: Final answer
    x = 69,987.90

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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.