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Finding the Fourth Proportional to 127,671.35, 191,399.81 and 55,570.40

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Solution

The fourth proportional to 127,671.35, 191,399.81 and 55,570.40 is: 83,308.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,671.35 : 191,399.81 = 55,570.40 : x
  2. Step 2: Convert to fraction form
    127,671.35/191,399.81 = 55,570.40/x
  3. Step 3: Cross multiply
    127,671.35x = 191,399.81 × 55,570.40
  4. Step 4: Simplify right side
    127,671.35x = 10,636,162,766.77
  5. Step 5: Solve for x
    x = 10,636,162,766.77/127,671.35
  6. Step 6: Final answer
    x = 83,308.93

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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.