Home / 156,660.15-216,190.81-85,040.17

Finding the Fourth Proportional to 156,660.15, 216,190.81 and 85,040.17

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Solution

The fourth proportional to 156,660.15, 216,190.81 and 85,040.17 is: 117,355.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,660.15 : 216,190.81 = 85,040.17 : x
  2. Step 2: Convert to fraction form
    156,660.15/216,190.81 = 85,040.17/x
  3. Step 3: Cross multiply
    156,660.15x = 216,190.81 × 85,040.17
  4. Step 4: Simplify right side
    156,660.15x = 18,384,902,800.66
  5. Step 5: Solve for x
    x = 18,384,902,800.66/156,660.15
  6. Step 6: Final answer
    x = 117,355.32

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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.