Home / 86,682.85-130,024.28-81,434.05

Finding the Fourth Proportional to 86,682.85, 130,024.28 and 81,434.05

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Solution

The fourth proportional to 86,682.85, 130,024.28 and 81,434.05 is: 122,151.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,682.85 : 130,024.28 = 81,434.05 : x
  2. Step 2: Convert to fraction form
    86,682.85/130,024.28 = 81,434.05/x
  3. Step 3: Cross multiply
    86,682.85x = 130,024.28 × 81,434.05
  4. Step 4: Simplify right side
    86,682.85x = 10,588,403,311.56
  5. Step 5: Solve for x
    x = 10,588,403,311.56/86,682.85
  6. Step 6: Final answer
    x = 122,151.08

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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.