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Finding the Fourth Proportional to 127,146, 175,493.76 and 86,876.08

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Solution

The fourth proportional to 127,146, 175,493.76 and 86,876.08 is: 119,911.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,146 : 175,493.76 = 86,876.08 : x
  2. Step 2: Convert to fraction form
    127,146/175,493.76 = 86,876.08/x
  3. Step 3: Cross multiply
    127,146x = 175,493.76 × 86,876.08
  4. Step 4: Simplify right side
    127,146x = 15,246,209,933.26
  5. Step 5: Solve for x
    x = 15,246,209,933.26/127,146
  6. Step 6: Final answer
    x = 119,911.05

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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.