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Finding the Fourth Proportional to 86,146.80, 129,025.80 and 51,154.80

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Solution

The fourth proportional to 86,146.80, 129,025.80 and 51,154.80 is: 76,616.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,146.80 : 129,025.80 = 51,154.80 : x
  2. Step 2: Convert to fraction form
    86,146.80/129,025.80 = 51,154.80/x
  3. Step 3: Cross multiply
    86,146.80x = 129,025.80 × 51,154.80
  4. Step 4: Simplify right side
    86,146.80x = 6,600,288,993.84
  5. Step 5: Solve for x
    x = 6,600,288,993.84/86,146.80
  6. Step 6: Final answer
    x = 76,616.76

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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.