Home / 86,849.28-130,014.72-77,836.80

Finding the Fourth Proportional to 86,849.28, 130,014.72 and 77,836.80

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Solution

The fourth proportional to 86,849.28, 130,014.72 and 77,836.80 is: 116,522.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,849.28 : 130,014.72 = 77,836.80 : x
  2. Step 2: Convert to fraction form
    86,849.28/130,014.72 = 77,836.80/x
  3. Step 3: Cross multiply
    86,849.28x = 130,014.72 × 77,836.80
  4. Step 4: Simplify right side
    86,849.28x = 10,119,929,757.70
  5. Step 5: Solve for x
    x = 10,119,929,757.70/86,849.28
  6. Step 6: Final answer
    x = 116,522.90

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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.