Home / 115,331.40-172,997.10-108,916.20

Finding the Fourth Proportional to 115,331.40, 172,997.10 and 108,916.20

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Solution

The fourth proportional to 115,331.40, 172,997.10 and 108,916.20 is: 163,374.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,331.40 : 172,997.10 = 108,916.20 : x
  2. Step 2: Convert to fraction form
    115,331.40/172,997.10 = 108,916.20/x
  3. Step 3: Cross multiply
    115,331.40x = 172,997.10 × 108,916.20
  4. Step 4: Simplify right side
    115,331.40x = 18,842,186,743.02
  5. Step 5: Solve for x
    x = 18,842,186,743.02/115,331.40
  6. Step 6: Final answer
    x = 163,374.30

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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.