Home / 217,007.75-299,483.03-121,513.61

Finding the Fourth Proportional to 217,007.75, 299,483.03 and 121,513.61

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Solution

The fourth proportional to 217,007.75, 299,483.03 and 121,513.61 is: 167,695.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,007.75 : 299,483.03 = 121,513.61 : x
  2. Step 2: Convert to fraction form
    217,007.75/299,483.03 = 121,513.61/x
  3. Step 3: Cross multiply
    217,007.75x = 299,483.03 × 121,513.61
  4. Step 4: Simplify right side
    217,007.75x = 36,391,264,109.04
  5. Step 5: Solve for x
    x = 36,391,264,109.04/217,007.75
  6. Step 6: Final answer
    x = 167,695.69

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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.