Home / 106,733.76-147,121.44-72,267.60

Finding the Fourth Proportional to 106,733.76, 147,121.44 and 72,267.60

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Solution

The fourth proportional to 106,733.76, 147,121.44 and 72,267.60 is: 99,613.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,733.76 : 147,121.44 = 72,267.60 : x
  2. Step 2: Convert to fraction form
    106,733.76/147,121.44 = 72,267.60/x
  3. Step 3: Cross multiply
    106,733.76x = 147,121.44 × 72,267.60
  4. Step 4: Simplify right side
    106,733.76x = 10,632,113,377.34
  5. Step 5: Solve for x
    x = 10,632,113,377.34/106,733.76
  6. Step 6: Final answer
    x = 99,613.41

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.