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Finding the Fourth Proportional to 172,397.94, 258,596.46 and 54,078.18

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Solution

The fourth proportional to 172,397.94, 258,596.46 and 54,078.18 is: 81,117.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,397.94 : 258,596.46 = 54,078.18 : x
  2. Step 2: Convert to fraction form
    172,397.94/258,596.46 = 54,078.18/x
  3. Step 3: Cross multiply
    172,397.94x = 258,596.46 × 54,078.18
  4. Step 4: Simplify right side
    172,397.94x = 13,984,425,911.24
  5. Step 5: Solve for x
    x = 13,984,425,911.24/172,397.94
  6. Step 6: Final answer
    x = 81,117.13

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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.