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Finding the Fourth Proportional to 172,117.90, 258,176.85 and 53,801.20

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Solution

The fourth proportional to 172,117.90, 258,176.85 and 53,801.20 is: 80,701.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,117.90 : 258,176.85 = 53,801.20 : x
  2. Step 2: Convert to fraction form
    172,117.90/258,176.85 = 53,801.20/x
  3. Step 3: Cross multiply
    172,117.90x = 258,176.85 × 53,801.20
  4. Step 4: Simplify right side
    172,117.90x = 13,890,224,342.22
  5. Step 5: Solve for x
    x = 13,890,224,342.22/172,117.90
  6. Step 6: Final answer
    x = 80,701.80

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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.