Home / 127,190.40-175,523.43-79,471.42

Finding the Fourth Proportional to 127,190.40, 175,523.43 and 79,471.42

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Solution

The fourth proportional to 127,190.40, 175,523.43 and 79,471.42 is: 109,670.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,190.40 : 175,523.43 = 79,471.42 : x
  2. Step 2: Convert to fraction form
    127,190.40/175,523.43 = 79,471.42/x
  3. Step 3: Cross multiply
    127,190.40x = 175,523.43 × 79,471.42
  4. Step 4: Simplify right side
    127,190.40x = 13,949,096,225.37
  5. Step 5: Solve for x
    x = 13,949,096,225.37/127,190.40
  6. Step 6: Final answer
    x = 109,670.98

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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.