Home / 156,972.74-216,621.30-85,352.81

Finding the Fourth Proportional to 156,972.74, 216,621.30 and 85,352.81

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Solution

The fourth proportional to 156,972.74, 216,621.30 and 85,352.81 is: 117,786.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,972.74 : 216,621.30 = 85,352.81 : x
  2. Step 2: Convert to fraction form
    156,972.74/216,621.30 = 85,352.81/x
  3. Step 3: Cross multiply
    156,972.74x = 216,621.30 × 85,352.81
  4. Step 4: Simplify right side
    156,972.74x = 18,489,235,897.82
  5. Step 5: Solve for x
    x = 18,489,235,897.82/156,972.74
  6. Step 6: Final answer
    x = 117,786.29

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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.