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Finding the Fourth Proportional to 172,901.16, 258,884.10 and 89,620.20

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Solution

The fourth proportional to 172,901.16, 258,884.10 and 89,620.20 is: 134,187.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,901.16 : 258,884.10 = 89,620.20 : x
  2. Step 2: Convert to fraction form
    172,901.16/258,884.10 = 89,620.20/x
  3. Step 3: Cross multiply
    172,901.16x = 258,884.10 × 89,620.20
  4. Step 4: Simplify right side
    172,901.16x = 23,201,244,818.82
  5. Step 5: Solve for x
    x = 23,201,244,818.82/172,901.16
  6. Step 6: Final answer
    x = 134,187.91

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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.