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Finding the Fourth Proportional to 172,292.40, 258,438.60 and 53,975.70

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Solution

The fourth proportional to 172,292.40, 258,438.60 and 53,975.70 is: 80,963.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,292.40 : 258,438.60 = 53,975.70 : x
  2. Step 2: Convert to fraction form
    172,292.40/258,438.60 = 53,975.70/x
  3. Step 3: Cross multiply
    172,292.40x = 258,438.60 × 53,975.70
  4. Step 4: Simplify right side
    172,292.40x = 13,949,404,342.02
  5. Step 5: Solve for x
    x = 13,949,404,342.02/172,292.40
  6. Step 6: Final answer
    x = 80,963.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.