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Finding the Fourth Proportional to 127,147, 175,495.14 and 86,877.08

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Solution

The fourth proportional to 127,147, 175,495.14 and 86,877.08 is: 119,912.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,147 : 175,495.14 = 86,877.08 : x
  2. Step 2: Convert to fraction form
    127,147/175,495.14 = 86,877.08/x
  3. Step 3: Cross multiply
    127,147x = 175,495.14 × 86,877.08
  4. Step 4: Simplify right side
    127,147x = 15,246,505,317.39
  5. Step 5: Solve for x
    x = 15,246,505,317.39/127,147
  6. Step 6: Final answer
    x = 119,912.43

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1.5x scale

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.