Home / 185,598.45-256,126.56-100,715.51

Finding the Fourth Proportional to 185,598.45, 256,126.56 and 100,715.51

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Solution

The fourth proportional to 185,598.45, 256,126.56 and 100,715.51 is: 138,987.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,598.45 : 256,126.56 = 100,715.51 : x
  2. Step 2: Convert to fraction form
    185,598.45/256,126.56 = 100,715.51/x
  3. Step 3: Cross multiply
    185,598.45x = 256,126.56 × 100,715.51
  4. Step 4: Simplify right side
    185,598.45x = 25,795,917,114.95
  5. Step 5: Solve for x
    x = 25,795,917,114.95/185,598.45
  6. Step 6: Final answer
    x = 138,987.78

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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.