Home / 109,985.92-151,778.48-66,949.76

Finding the Fourth Proportional to 109,985.92, 151,778.48 and 66,949.76

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Solution

The fourth proportional to 109,985.92, 151,778.48 and 66,949.76 is: 92,389.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,985.92 : 151,778.48 = 66,949.76 : x
  2. Step 2: Convert to fraction form
    109,985.92/151,778.48 = 66,949.76/x
  3. Step 3: Cross multiply
    109,985.92x = 151,778.48 × 66,949.76
  4. Step 4: Simplify right side
    109,985.92x = 10,161,532,809.16
  5. Step 5: Solve for x
    x = 10,161,532,809.16/109,985.92
  6. Step 6: Final answer
    x = 92,389.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.