Home / 172,057.04-257,561.40-138,464.72

Finding the Fourth Proportional to 172,057.04, 257,561.40 and 138,464.72

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Solution

The fourth proportional to 172,057.04, 257,561.40 and 138,464.72 is: 207,275.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,057.04 : 257,561.40 = 138,464.72 : x
  2. Step 2: Convert to fraction form
    172,057.04/257,561.40 = 138,464.72/x
  3. Step 3: Cross multiply
    172,057.04x = 257,561.40 × 138,464.72
  4. Step 4: Simplify right side
    172,057.04x = 35,663,167,133.81
  5. Step 5: Solve for x
    x = 35,663,167,133.81/172,057.04
  6. Step 6: Final answer
    x = 207,275.26

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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.