Home / 109,680.40-164,520.60-101,126.80

Finding the Fourth Proportional to 109,680.40, 164,520.60 and 101,126.80

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Solution

The fourth proportional to 109,680.40, 164,520.60 and 101,126.80 is: 151,690.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,680.40 : 164,520.60 = 101,126.80 : x
  2. Step 2: Convert to fraction form
    109,680.40/164,520.60 = 101,126.80/x
  3. Step 3: Cross multiply
    109,680.40x = 164,520.60 × 101,126.80
  4. Step 4: Simplify right side
    109,680.40x = 16,637,441,812.08
  5. Step 5: Solve for x
    x = 16,637,441,812.08/109,680.40
  6. Step 6: Final answer
    x = 151,690.20

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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.