Home / 134,138.40-201,207.60-89,815.20

Finding the Fourth Proportional to 134,138.40, 201,207.60 and 89,815.20

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Solution

The fourth proportional to 134,138.40, 201,207.60 and 89,815.20 is: 134,722.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,138.40 : 201,207.60 = 89,815.20 : x
  2. Step 2: Convert to fraction form
    134,138.40/201,207.60 = 89,815.20/x
  3. Step 3: Cross multiply
    134,138.40x = 201,207.60 × 89,815.20
  4. Step 4: Simplify right side
    134,138.40x = 18,071,500,835.52
  5. Step 5: Solve for x
    x = 18,071,500,835.52/134,138.40
  6. Step 6: Final answer
    x = 134,722.80

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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.