Home / 191,498.08-286,819.36-138,786.56

Finding the Fourth Proportional to 191,498.08, 286,819.36 and 138,786.56

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Solution

The fourth proportional to 191,498.08, 286,819.36 and 138,786.56 is: 207,869.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,498.08 : 286,819.36 = 138,786.56 : x
  2. Step 2: Convert to fraction form
    191,498.08/286,819.36 = 138,786.56/x
  3. Step 3: Cross multiply
    191,498.08x = 286,819.36 × 138,786.56
  4. Step 4: Simplify right side
    191,498.08x = 39,806,672,315.80
  5. Step 5: Solve for x
    x = 39,806,672,315.80/191,498.08
  6. Step 6: Final answer
    x = 207,869.82

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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.