Home / 156,645.16-216,164.50-85,023.66

Finding the Fourth Proportional to 156,645.16, 216,164.50 and 85,023.66

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Solution

The fourth proportional to 156,645.16, 216,164.50 and 85,023.66 is: 117,329.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,645.16 : 216,164.50 = 85,023.66 : x
  2. Step 2: Convert to fraction form
    156,645.16/216,164.50 = 85,023.66/x
  3. Step 3: Cross multiply
    156,645.16x = 216,164.50 × 85,023.66
  4. Step 4: Simplify right side
    156,645.16x = 18,379,096,952.07
  5. Step 5: Solve for x
    x = 18,379,096,952.07/156,645.16
  6. Step 6: Final answer
    x = 117,329.49

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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.