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Finding the Fourth Proportional to 131,313, 180,687.04 and 127,638.84

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Solution

The fourth proportional to 131,313, 180,687.04 and 127,638.84 is: 175,631.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,313 : 180,687.04 = 127,638.84 : x
  2. Step 2: Convert to fraction form
    131,313/180,687.04 = 127,638.84/x
  3. Step 3: Cross multiply
    131,313x = 180,687.04 × 127,638.84
  4. Step 4: Simplify right side
    131,313x = 23,062,684,188.63
  5. Step 5: Solve for x
    x = 23,062,684,188.63/131,313
  6. Step 6: Final answer
    x = 175,631.39

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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.