Home / 127,932.20-191,639.10-72,463.40

Finding the Fourth Proportional to 127,932.20, 191,639.10 and 72,463.40

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Solution

The fourth proportional to 127,932.20, 191,639.10 and 72,463.40 is: 108,548.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,932.20 : 191,639.10 = 72,463.40 : x
  2. Step 2: Convert to fraction form
    127,932.20/191,639.10 = 72,463.40/x
  3. Step 3: Cross multiply
    127,932.20x = 191,639.10 × 72,463.40
  4. Step 4: Simplify right side
    127,932.20x = 13,886,820,758.94
  5. Step 5: Solve for x
    x = 13,886,820,758.94/127,932.20
  6. Step 6: Final answer
    x = 108,548.28

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.