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Finding the Fourth Proportional to 95,149, 131,478.83 and 90,537.16

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Solution

The fourth proportional to 95,149, 131,478.83 and 90,537.16 is: 125,106.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    95,149 : 131,478.83 = 90,537.16 : x
  2. Step 2: Convert to fraction form
    95,149/131,478.83 = 90,537.16/x
  3. Step 3: Cross multiply
    95,149x = 131,478.83 × 90,537.16
  4. Step 4: Simplify right side
    95,149x = 11,903,719,868.32
  5. Step 5: Solve for x
    x = 11,903,719,868.32/95,149
  6. Step 6: Final answer
    x = 125,106.10

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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.