Home / 135,789.27-203,683.91-72,417.40

Finding the Fourth Proportional to 135,789.27, 203,683.91 and 72,417.40

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Solution

The fourth proportional to 135,789.27, 203,683.91 and 72,417.40 is: 108,626.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,789.27 : 203,683.91 = 72,417.40 : x
  2. Step 2: Convert to fraction form
    135,789.27/203,683.91 = 72,417.40/x
  3. Step 3: Cross multiply
    135,789.27x = 203,683.91 × 72,417.40
  4. Step 4: Simplify right side
    135,789.27x = 14,750,258,312.74
  5. Step 5: Solve for x
    x = 14,750,258,312.74/135,789.27
  6. Step 6: Final answer
    x = 108,626.10

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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.