Home / 156,628.90-234,943.35-90,273.70

Finding the Fourth Proportional to 156,628.90, 234,943.35 and 90,273.70

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Solution

The fourth proportional to 156,628.90, 234,943.35 and 90,273.70 is: 135,410.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,628.90 : 234,943.35 = 90,273.70 : x
  2. Step 2: Convert to fraction form
    156,628.90/234,943.35 = 90,273.70/x
  3. Step 3: Cross multiply
    156,628.90x = 234,943.35 × 90,273.70
  4. Step 4: Simplify right side
    156,628.90x = 21,209,205,494.90
  5. Step 5: Solve for x
    x = 21,209,205,494.90/156,628.90
  6. Step 6: Final answer
    x = 135,410.55

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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.