Home / 125,622.70-188,434.05-72,478.60

Finding the Fourth Proportional to 125,622.70, 188,434.05 and 72,478.60

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Solution

The fourth proportional to 125,622.70, 188,434.05 and 72,478.60 is: 108,717.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,622.70 : 188,434.05 = 72,478.60 : x
  2. Step 2: Convert to fraction form
    125,622.70/188,434.05 = 72,478.60/x
  3. Step 3: Cross multiply
    125,622.70x = 188,434.05 × 72,478.60
  4. Step 4: Simplify right side
    125,622.70x = 13,657,436,136.33
  5. Step 5: Solve for x
    x = 13,657,436,136.33/125,622.70
  6. Step 6: Final answer
    x = 108,717.90

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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.