Home / 156,641.18-216,165.24-85,021.20

Finding the Fourth Proportional to 156,641.18, 216,165.24 and 85,021.20

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Solution

The fourth proportional to 156,641.18, 216,165.24 and 85,021.20 is: 117,329.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,641.18 : 216,165.24 = 85,021.20 : x
  2. Step 2: Convert to fraction form
    156,641.18/216,165.24 = 85,021.20/x
  3. Step 3: Cross multiply
    156,641.18x = 216,165.24 × 85,021.20
  4. Step 4: Simplify right side
    156,641.18x = 18,378,628,103.09
  5. Step 5: Solve for x
    x = 18,378,628,103.09/156,641.18
  6. Step 6: Final answer
    x = 117,329.48

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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.