Home / 156,813.18-216,406.71-85,197.66

Finding the Fourth Proportional to 156,813.18, 216,406.71 and 85,197.66

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Solution

The fourth proportional to 156,813.18, 216,406.71 and 85,197.66 is: 117,575.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,813.18 : 216,406.71 = 85,197.66 : x
  2. Step 2: Convert to fraction form
    156,813.18/216,406.71 = 85,197.66/x
  3. Step 3: Cross multiply
    156,813.18x = 216,406.71 × 85,197.66
  4. Step 4: Simplify right side
    156,813.18x = 18,437,345,300.30
  5. Step 5: Solve for x
    x = 18,437,345,300.30/156,813.18
  6. Step 6: Final answer
    x = 117,575.23

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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.