Home / 156,786.76-216,362.10-85,165.18

Finding the Fourth Proportional to 156,786.76, 216,362.10 and 85,165.18

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Solution

The fourth proportional to 156,786.76, 216,362.10 and 85,165.18 is: 117,525.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,786.76 : 216,362.10 = 85,165.18 : x
  2. Step 2: Convert to fraction form
    156,786.76/216,362.10 = 85,165.18/x
  3. Step 3: Cross multiply
    156,786.76x = 216,362.10 × 85,165.18
  4. Step 4: Simplify right side
    156,786.76x = 18,426,517,191.68
  5. Step 5: Solve for x
    x = 18,426,517,191.68/156,786.76
  6. Step 6: Final answer
    x = 117,525.98

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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.