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Finding the Fourth Proportional to 92,886.48, 128,183.16 and 55,160.64

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Solution

The fourth proportional to 92,886.48, 128,183.16 and 55,160.64 is: 76,121.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,886.48 : 128,183.16 = 55,160.64 : x
  2. Step 2: Convert to fraction form
    92,886.48/128,183.16 = 55,160.64/x
  3. Step 3: Cross multiply
    92,886.48x = 128,183.16 × 55,160.64
  4. Step 4: Simplify right side
    92,886.48x = 7,070,665,142.82
  5. Step 5: Solve for x
    x = 7,070,665,142.82/92,886.48
  6. Step 6: Final answer
    x = 76,121.57

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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.