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Finding the Fourth Proportional to 155,948, 215,195.16 and 92,274.64

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Solution

The fourth proportional to 155,948, 215,195.16 and 92,274.64 is: 127,331.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,948 : 215,195.16 = 92,274.64 : x
  2. Step 2: Convert to fraction form
    155,948/215,195.16 = 92,274.64/x
  3. Step 3: Cross multiply
    155,948x = 215,195.16 × 92,274.64
  4. Step 4: Simplify right side
    155,948x = 19,857,055,918.74
  5. Step 5: Solve for x
    x = 19,857,055,918.74/155,948
  6. Step 6: Final answer
    x = 127,331.26

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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.