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Finding the Fourth Proportional to 119,487, 164,872.76 and 68,490.34

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Solution

The fourth proportional to 119,487, 164,872.76 and 68,490.34 is: 94,505.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,487 : 164,872.76 = 68,490.34 : x
  2. Step 2: Convert to fraction form
    119,487/164,872.76 = 68,490.34/x
  3. Step 3: Cross multiply
    119,487x = 164,872.76 × 68,490.34
  4. Step 4: Simplify right side
    119,487x = 11,292,191,389.14
  5. Step 5: Solve for x
    x = 11,292,191,389.14/119,487
  6. Step 6: Final answer
    x = 94,505.61

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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.