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Finding the Fourth Proportional to 134,439.71, 201,671.72 and 39,669.71

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Solution

The fourth proportional to 134,439.71, 201,671.72 and 39,669.71 is: 59,508.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,439.71 : 201,671.72 = 39,669.71 : x
  2. Step 2: Convert to fraction form
    134,439.71/201,671.72 = 39,669.71/x
  3. Step 3: Cross multiply
    134,439.71x = 201,671.72 × 39,669.71
  4. Step 4: Simplify right side
    134,439.71x = 8,000,258,449.25
  5. Step 5: Solve for x
    x = 8,000,258,449.25/134,439.71
  6. Step 6: Final answer
    x = 59,508.15

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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.