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Finding the Fourth Proportional to 172,116.90, 258,175.35 and 53,800.20

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Solution

The fourth proportional to 172,116.90, 258,175.35 and 53,800.20 is: 80,700.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,116.90 : 258,175.35 = 53,800.20 : x
  2. Step 2: Convert to fraction form
    172,116.90/258,175.35 = 53,800.20/x
  3. Step 3: Cross multiply
    172,116.90x = 258,175.35 × 53,800.20
  4. Step 4: Simplify right side
    172,116.90x = 13,889,885,465.07
  5. Step 5: Solve for x
    x = 13,889,885,465.07/172,116.90
  6. Step 6: Final answer
    x = 80,700.30

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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.