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Finding the Fourth Proportional to 172,386.77, 237,758.85 and 117,971.09

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Solution

The fourth proportional to 172,386.77, 237,758.85 and 117,971.09 is: 162,707.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,386.77 : 237,758.85 = 117,971.09 : x
  2. Step 2: Convert to fraction form
    172,386.77/237,758.85 = 117,971.09/x
  3. Step 3: Cross multiply
    172,386.77x = 237,758.85 × 117,971.09
  4. Step 4: Simplify right side
    172,386.77x = 28,048,670,691.65
  5. Step 5: Solve for x
    x = 28,048,670,691.65/172,386.77
  6. Step 6: Final answer
    x = 162,707.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.