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Finding the Fourth Proportional to 155,226, 214,212.15 and 88,158

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Solution

The fourth proportional to 155,226, 214,212.15 and 88,158 is: 121,658.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,226 : 214,212.15 = 88,158 : x
  2. Step 2: Convert to fraction form
    155,226/214,212.15 = 88,158/x
  3. Step 3: Cross multiply
    155,226x = 214,212.15 × 88,158
  4. Step 4: Simplify right side
    155,226x = 18,884,514,719.70
  5. Step 5: Solve for x
    x = 18,884,514,719.70/155,226
  6. Step 6: Final answer
    x = 121,658.19

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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.