Home / 185,789.34-279,011.25-138,417.30

Finding the Fourth Proportional to 185,789.34, 279,011.25 and 138,417.30

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Solution

The fourth proportional to 185,789.34, 279,011.25 and 138,417.30 is: 207,869.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,789.34 : 279,011.25 = 138,417.30 : x
  2. Step 2: Convert to fraction form
    185,789.34/279,011.25 = 138,417.30/x
  3. Step 3: Cross multiply
    185,789.34x = 279,011.25 × 138,417.30
  4. Step 4: Simplify right side
    185,789.34x = 38,619,983,894.63
  5. Step 5: Solve for x
    x = 38,619,983,894.63/185,789.34
  6. Step 6: Final answer
    x = 207,869.75

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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.