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Finding the Fourth Proportional to 109,385.70, 164,078.55 and 104,720.10

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Solution

The fourth proportional to 109,385.70, 164,078.55 and 104,720.10 is: 157,080.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,385.70 : 164,078.55 = 104,720.10 : x
  2. Step 2: Convert to fraction form
    109,385.70/164,078.55 = 104,720.10/x
  3. Step 3: Cross multiply
    109,385.70x = 164,078.55 × 104,720.10
  4. Step 4: Simplify right side
    109,385.70x = 17,182,322,163.86
  5. Step 5: Solve for x
    x = 17,182,322,163.86/109,385.70
  6. Step 6: Final answer
    x = 157,080.15

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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.