Home / 127,830.11-191,787.69-56,742.89

Finding the Fourth Proportional to 127,830.11, 191,787.69 and 56,742.89

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Solution

The fourth proportional to 127,830.11, 191,787.69 and 56,742.89 is: 85,133.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,830.11 : 191,787.69 = 56,742.89 : x
  2. Step 2: Convert to fraction form
    127,830.11/191,787.69 = 56,742.89/x
  3. Step 3: Cross multiply
    127,830.11x = 191,787.69 × 56,742.89
  4. Step 4: Simplify right side
    127,830.11x = 10,882,587,797.02
  5. Step 5: Solve for x
    x = 10,882,587,797.02/127,830.11
  6. Step 6: Final answer
    x = 85,133.21

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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.