Home / 206,904.78-309,854.16-117,890.24

Finding the Fourth Proportional to 206,904.78, 309,854.16 and 117,890.24

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Solution

The fourth proportional to 206,904.78, 309,854.16 and 117,890.24 is: 176,548.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,904.78 : 309,854.16 = 117,890.24 : x
  2. Step 2: Convert to fraction form
    206,904.78/309,854.16 = 117,890.24/x
  3. Step 3: Cross multiply
    206,904.78x = 309,854.16 × 117,890.24
  4. Step 4: Simplify right side
    206,904.78x = 36,528,779,738.13
  5. Step 5: Solve for x
    x = 36,528,779,738.13/206,904.78
  6. Step 6: Final answer
    x = 176,548.75

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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.