Home / 156,625.10-216,142.78-85,005.12

Finding the Fourth Proportional to 156,625.10, 216,142.78 and 85,005.12

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Solution

The fourth proportional to 156,625.10, 216,142.78 and 85,005.12 is: 117,307.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,625.10 : 216,142.78 = 85,005.12 : x
  2. Step 2: Convert to fraction form
    156,625.10/216,142.78 = 85,005.12/x
  3. Step 3: Cross multiply
    156,625.10x = 216,142.78 × 85,005.12
  4. Step 4: Simplify right side
    156,625.10x = 18,373,242,951.03
  5. Step 5: Solve for x
    x = 18,373,242,951.03/156,625.10
  6. Step 6: Final answer
    x = 117,307.14

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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.