Home / 156,964.90-235,447.35-90,609.70

Finding the Fourth Proportional to 156,964.90, 235,447.35 and 90,609.70

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Solution

The fourth proportional to 156,964.90, 235,447.35 and 90,609.70 is: 135,914.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,964.90 : 235,447.35 = 90,609.70 : x
  2. Step 2: Convert to fraction form
    156,964.90/235,447.35 = 90,609.70/x
  3. Step 3: Cross multiply
    156,964.90x = 235,447.35 × 90,609.70
  4. Step 4: Simplify right side
    156,964.90x = 21,333,813,749.30
  5. Step 5: Solve for x
    x = 21,333,813,749.30/156,964.90
  6. Step 6: Final answer
    x = 135,914.55

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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.