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Finding the Fourth Proportional to 172,810.05, 259,215.08 and 137,818.05

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Solution

The fourth proportional to 172,810.05, 259,215.08 and 137,818.05 is: 206,727.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,810.05 : 259,215.08 = 137,818.05 : x
  2. Step 2: Convert to fraction form
    172,810.05/259,215.08 = 137,818.05/x
  3. Step 3: Cross multiply
    172,810.05x = 259,215.08 × 137,818.05
  4. Step 4: Simplify right side
    172,810.05x = 35,724,516,167.10
  5. Step 5: Solve for x
    x = 35,724,516,167.10/172,810.05
  6. Step 6: Final answer
    x = 206,727.08

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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.