Home / 159,057.08-219,497-86,458.40

Finding the Fourth Proportional to 159,057.08, 219,497 and 86,458.40

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Solution

The fourth proportional to 159,057.08, 219,497 and 86,458.40 is: 119,311.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,057.08 : 219,497 = 86,458.40 : x
  2. Step 2: Convert to fraction form
    159,057.08/219,497 = 86,458.40/x
  3. Step 3: Cross multiply
    159,057.08x = 219,497 × 86,458.40
  4. Step 4: Simplify right side
    159,057.08x = 18,977,359,424.80
  5. Step 5: Solve for x
    x = 18,977,359,424.80/159,057.08
  6. Step 6: Final answer
    x = 119,311.63

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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.