Home / 109,409.90-164,114.85-100,856.30

Finding the Fourth Proportional to 109,409.90, 164,114.85 and 100,856.30

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Solution

The fourth proportional to 109,409.90, 164,114.85 and 100,856.30 is: 151,284.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,409.90 : 164,114.85 = 100,856.30 : x
  2. Step 2: Convert to fraction form
    109,409.90/164,114.85 = 100,856.30/x
  3. Step 3: Cross multiply
    109,409.90x = 164,114.85 × 100,856.30
  4. Step 4: Simplify right side
    109,409.90x = 16,552,016,546.06
  5. Step 5: Solve for x
    x = 16,552,016,546.06/109,409.90
  6. Step 6: Final answer
    x = 151,284.45

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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.