Home / 156,636.78-216,152.96-85,015.26

Finding the Fourth Proportional to 156,636.78, 216,152.96 and 85,015.26

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Solution

The fourth proportional to 156,636.78, 216,152.96 and 85,015.26 is: 117,317.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,636.78 : 216,152.96 = 85,015.26 : x
  2. Step 2: Convert to fraction form
    156,636.78/216,152.96 = 85,015.26/x
  3. Step 3: Cross multiply
    156,636.78x = 216,152.96 × 85,015.26
  4. Step 4: Simplify right side
    156,636.78x = 18,376,299,669.09
  5. Step 5: Solve for x
    x = 18,376,299,669.09/156,636.78
  6. Step 6: Final answer
    x = 117,317.91

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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.