Home / 131,113.20-180,889.56-77,371.32

Finding the Fourth Proportional to 131,113.20, 180,889.56 and 77,371.32

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Solution

The fourth proportional to 131,113.20, 180,889.56 and 77,371.32 is: 106,744.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,113.20 : 180,889.56 = 77,371.32 : x
  2. Step 2: Convert to fraction form
    131,113.20/180,889.56 = 77,371.32/x
  3. Step 3: Cross multiply
    131,113.20x = 180,889.56 × 77,371.32
  4. Step 4: Simplify right side
    131,113.20x = 13,995,664,031.42
  5. Step 5: Solve for x
    x = 13,995,664,031.42/131,113.20
  6. Step 6: Final answer
    x = 106,744.89

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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.