Home / 156,986.09-216,644.91-85,370.30

Finding the Fourth Proportional to 156,986.09, 216,644.91 and 85,370.30

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Solution

The fourth proportional to 156,986.09, 216,644.91 and 85,370.30 is: 117,813.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,986.09 : 216,644.91 = 85,370.30 : x
  2. Step 2: Convert to fraction form
    156,986.09/216,644.91 = 85,370.30/x
  3. Step 3: Cross multiply
    156,986.09x = 216,644.91 × 85,370.30
  4. Step 4: Simplify right side
    156,986.09x = 18,495,040,960.17
  5. Step 5: Solve for x
    x = 18,495,040,960.17/156,986.09
  6. Step 6: Final answer
    x = 117,813.25

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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.