Home / 156,966.90-235,450.35-90,611.70

Finding the Fourth Proportional to 156,966.90, 235,450.35 and 90,611.70

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Solution

The fourth proportional to 156,966.90, 235,450.35 and 90,611.70 is: 135,917.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,966.90 : 235,450.35 = 90,611.70 : x
  2. Step 2: Convert to fraction form
    156,966.90/235,450.35 = 90,611.70/x
  3. Step 3: Cross multiply
    156,966.90x = 235,450.35 × 90,611.70
  4. Step 4: Simplify right side
    156,966.90x = 21,334,556,479.10
  5. Step 5: Solve for x
    x = 21,334,556,479.10/156,966.90
  6. Step 6: Final answer
    x = 135,917.55

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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.