Home / 156,165.12-215,514-88,196.40

Finding the Fourth Proportional to 156,165.12, 215,514 and 88,196.40

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Solution

The fourth proportional to 156,165.12, 215,514 and 88,196.40 is: 121,714.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,165.12 : 215,514 = 88,196.40 : x
  2. Step 2: Convert to fraction form
    156,165.12/215,514 = 88,196.40/x
  3. Step 3: Cross multiply
    156,165.12x = 215,514 × 88,196.40
  4. Step 4: Simplify right side
    156,165.12x = 19,007,558,949.60
  5. Step 5: Solve for x
    x = 19,007,558,949.60/156,165.12
  6. Step 6: Final answer
    x = 121,714.50

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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.