Home / 98,824.34-136,264.74-78,682.08

Finding the Fourth Proportional to 98,824.34, 136,264.74 and 78,682.08

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Solution

The fourth proportional to 98,824.34, 136,264.74 and 78,682.08 is: 108,491.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,824.34 : 136,264.74 = 78,682.08 : x
  2. Step 2: Convert to fraction form
    98,824.34/136,264.74 = 78,682.08/x
  3. Step 3: Cross multiply
    98,824.34x = 136,264.74 × 78,682.08
  4. Step 4: Simplify right side
    98,824.34x = 10,721,593,173.86
  5. Step 5: Solve for x
    x = 10,721,593,173.86/98,824.34
  6. Step 6: Final answer
    x = 108,491.42

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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.