Home / 156,660.50-216,191.77-85,040.57

Finding the Fourth Proportional to 156,660.50, 216,191.77 and 85,040.57

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Solution

The fourth proportional to 156,660.50, 216,191.77 and 85,040.57 is: 117,356.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,660.50 : 216,191.77 = 85,040.57 : x
  2. Step 2: Convert to fraction form
    156,660.50/216,191.77 = 85,040.57/x
  3. Step 3: Cross multiply
    156,660.50x = 216,191.77 × 85,040.57
  4. Step 4: Simplify right side
    156,660.50x = 18,385,071,677.99
  5. Step 5: Solve for x
    x = 18,385,071,677.99/156,660.50
  6. Step 6: Final answer
    x = 117,356.14

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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.