Home / 156,789.90-235,087.65-90,197.10

Finding the Fourth Proportional to 156,789.90, 235,087.65 and 90,197.10

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Solution

The fourth proportional to 156,789.90, 235,087.65 and 90,197.10 is: 135,239.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,789.90 : 235,087.65 = 90,197.10 : x
  2. Step 2: Convert to fraction form
    156,789.90/235,087.65 = 90,197.10/x
  3. Step 3: Cross multiply
    156,789.90x = 235,087.65 × 90,197.10
  4. Step 4: Simplify right side
    156,789.90x = 21,204,224,275.82
  5. Step 5: Solve for x
    x = 21,204,224,275.82/156,789.90
  6. Step 6: Final answer
    x = 135,239.73

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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.