Home / 156,630.10-216,149.75-85,010.12

Finding the Fourth Proportional to 156,630.10, 216,149.75 and 85,010.12

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Solution

The fourth proportional to 156,630.10, 216,149.75 and 85,010.12 is: 117,314.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,630.10 : 216,149.75 = 85,010.12 : x
  2. Step 2: Convert to fraction form
    156,630.10/216,149.75 = 85,010.12/x
  3. Step 3: Cross multiply
    156,630.10x = 216,149.75 × 85,010.12
  4. Step 4: Simplify right side
    156,630.10x = 18,374,916,185.47
  5. Step 5: Solve for x
    x = 18,374,916,185.47/156,630.10
  6. Step 6: Final answer
    x = 117,314.08

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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.