Home / 185,609.34-256,139.55-100,724.58

Finding the Fourth Proportional to 185,609.34, 256,139.55 and 100,724.58

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Solution

The fourth proportional to 185,609.34, 256,139.55 and 100,724.58 is: 138,999.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,609.34 : 256,139.55 = 100,724.58 : x
  2. Step 2: Convert to fraction form
    185,609.34/256,139.55 = 100,724.58/x
  3. Step 3: Cross multiply
    185,609.34x = 256,139.55 × 100,724.58
  4. Step 4: Simplify right side
    185,609.34x = 25,799,548,595.14
  5. Step 5: Solve for x
    x = 25,799,548,595.14/185,609.34
  6. Step 6: Final answer
    x = 138,999.19

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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.