Home / 172,890.18-238,668.12-121,944.42

Finding the Fourth Proportional to 172,890.18, 238,668.12 and 121,944.42

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Solution

The fourth proportional to 172,890.18, 238,668.12 and 121,944.42 is: 168,339.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,890.18 : 238,668.12 = 121,944.42 : x
  2. Step 2: Convert to fraction form
    172,890.18/238,668.12 = 121,944.42/x
  3. Step 3: Cross multiply
    172,890.18x = 238,668.12 × 121,944.42
  4. Step 4: Simplify right side
    172,890.18x = 29,104,245,465.89
  5. Step 5: Solve for x
    x = 29,104,245,465.89/172,890.18
  6. Step 6: Final answer
    x = 168,339.49

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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.