Home / 109,385.20-164,077.80-104,719.60

Finding the Fourth Proportional to 109,385.20, 164,077.80 and 104,719.60

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Solution

The fourth proportional to 109,385.20, 164,077.80 and 104,719.60 is: 157,079.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,385.20 : 164,077.80 = 104,719.60 : x
  2. Step 2: Convert to fraction form
    109,385.20/164,077.80 = 104,719.60/x
  3. Step 3: Cross multiply
    109,385.20x = 164,077.80 × 104,719.60
  4. Step 4: Simplify right side
    109,385.20x = 17,182,161,584.88
  5. Step 5: Solve for x
    x = 17,182,161,584.88/109,385.20
  6. Step 6: Final answer
    x = 157,079.40

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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.