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Finding the Fourth Proportional to 147,576, 203,654.88 and 87,960

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Solution

The fourth proportional to 147,576, 203,654.88 and 87,960 is: 121,384.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,576 : 203,654.88 = 87,960 : x
  2. Step 2: Convert to fraction form
    147,576/203,654.88 = 87,960/x
  3. Step 3: Cross multiply
    147,576x = 203,654.88 × 87,960
  4. Step 4: Simplify right side
    147,576x = 17,913,483,244.80
  5. Step 5: Solve for x
    x = 17,913,483,244.80/147,576
  6. Step 6: Final answer
    x = 121,384.80

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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.