Home / 156,609.19-216,120.83-84,989.22

Finding the Fourth Proportional to 156,609.19, 216,120.83 and 84,989.22

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Solution

The fourth proportional to 156,609.19, 216,120.83 and 84,989.22 is: 117,285.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,609.19 : 216,120.83 = 84,989.22 : x
  2. Step 2: Convert to fraction form
    156,609.19/216,120.83 = 84,989.22/x
  3. Step 3: Cross multiply
    156,609.19x = 216,120.83 × 84,989.22
  4. Step 4: Simplify right side
    156,609.19x = 18,367,941,631.02
  5. Step 5: Solve for x
    x = 18,367,941,631.02/156,609.19
  6. Step 6: Final answer
    x = 117,285.21

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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.