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Finding the Fourth Proportional to 136,313, 188,116.12 and 74,227.60

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Solution

The fourth proportional to 136,313, 188,116.12 and 74,227.60 is: 102,436.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,313 : 188,116.12 = 74,227.60 : x
  2. Step 2: Convert to fraction form
    136,313/188,116.12 = 74,227.60/x
  3. Step 3: Cross multiply
    136,313x = 188,116.12 × 74,227.60
  4. Step 4: Simplify right side
    136,313x = 13,963,408,108.91
  5. Step 5: Solve for x
    x = 13,963,408,108.91/136,313
  6. Step 6: Final answer
    x = 102,436.36

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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.