Home / 156,279.16-215,621.48-98,142.16

Finding the Fourth Proportional to 156,279.16, 215,621.48 and 98,142.16

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Solution

The fourth proportional to 156,279.16, 215,621.48 and 98,142.16 is: 135,408.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,279.16 : 215,621.48 = 98,142.16 : x
  2. Step 2: Convert to fraction form
    156,279.16/215,621.48 = 98,142.16/x
  3. Step 3: Cross multiply
    156,279.16x = 215,621.48 × 98,142.16
  4. Step 4: Simplify right side
    156,279.16x = 21,161,557,789.60
  5. Step 5: Solve for x
    x = 21,161,557,789.60/156,279.16
  6. Step 6: Final answer
    x = 135,408.70

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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.