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Finding the Fourth Proportional to 94,306.70, 130,143.78 and 51,286.70

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Solution

The fourth proportional to 94,306.70, 130,143.78 and 51,286.70 is: 70,775.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    94,306.70 : 130,143.78 = 51,286.70 : x
  2. Step 2: Convert to fraction form
    94,306.70/130,143.78 = 51,286.70/x
  3. Step 3: Cross multiply
    94,306.70x = 130,143.78 × 51,286.70
  4. Step 4: Simplify right side
    94,306.70x = 6,674,644,351.01
  5. Step 5: Solve for x
    x = 6,674,644,351.01/94,306.70
  6. Step 6: Final answer
    x = 70,775.93

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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.