Home / 109,519.40-164,279.10-98,438.60

Finding the Fourth Proportional to 109,519.40, 164,279.10 and 98,438.60

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Solution

The fourth proportional to 109,519.40, 164,279.10 and 98,438.60 is: 147,657.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,519.40 : 164,279.10 = 98,438.60 : x
  2. Step 2: Convert to fraction form
    109,519.40/164,279.10 = 98,438.60/x
  3. Step 3: Cross multiply
    109,519.40x = 164,279.10 × 98,438.60
  4. Step 4: Simplify right side
    109,519.40x = 16,171,404,613.26
  5. Step 5: Solve for x
    x = 16,171,404,613.26/109,519.40
  6. Step 6: Final answer
    x = 147,657.90

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1.5x scale

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.