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Finding the Fourth Proportional to 156,631.68, 216,162.36 and 88,648.68

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Solution

The fourth proportional to 156,631.68, 216,162.36 and 88,648.68 is: 122,341.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,631.68 : 216,162.36 = 88,648.68 : x
  2. Step 2: Convert to fraction form
    156,631.68/216,162.36 = 88,648.68/x
  3. Step 3: Cross multiply
    156,631.68x = 216,162.36 × 88,648.68
  4. Step 4: Simplify right side
    156,631.68x = 19,162,507,879.68
  5. Step 5: Solve for x
    x = 19,162,507,879.68/156,631.68
  6. Step 6: Final answer
    x = 122,341.20

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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.