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Finding the Fourth Proportional to 155,208, 214,187.04 and 84,552

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Solution

The fourth proportional to 155,208, 214,187.04 and 84,552 is: 116,681.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,208 : 214,187.04 = 84,552 : x
  2. Step 2: Convert to fraction form
    155,208/214,187.04 = 84,552/x
  3. Step 3: Cross multiply
    155,208x = 214,187.04 × 84,552
  4. Step 4: Simplify right side
    155,208x = 18,109,942,606.08
  5. Step 5: Solve for x
    x = 18,109,942,606.08/155,208
  6. Step 6: Final answer
    x = 116,681.76

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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.