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Finding the Fourth Proportional to 155,369, 214,409.46 and 88,301

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Solution

The fourth proportional to 155,369, 214,409.46 and 88,301 is: 121,855.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,369 : 214,409.46 = 88,301 : x
  2. Step 2: Convert to fraction form
    155,369/214,409.46 = 88,301/x
  3. Step 3: Cross multiply
    155,369x = 214,409.46 × 88,301
  4. Step 4: Simplify right side
    155,369x = 18,932,569,727.46
  5. Step 5: Solve for x
    x = 18,932,569,727.46/155,369
  6. Step 6: Final answer
    x = 121,855.52

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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.