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Finding the Fourth Proportional to 113,579.59, 156,736.16 and 65,189.49

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Solution

The fourth proportional to 113,579.59, 156,736.16 and 65,189.49 is: 89,959.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,579.59 : 156,736.16 = 65,189.49 : x
  2. Step 2: Convert to fraction form
    113,579.59/156,736.16 = 65,189.49/x
  3. Step 3: Cross multiply
    113,579.59x = 156,736.16 × 65,189.49
  4. Step 4: Simplify right side
    113,579.59x = 10,217,549,714.25
  5. Step 5: Solve for x
    x = 10,217,549,714.25/113,579.59
  6. Step 6: Final answer
    x = 89,959.38

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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.