Home / 185,695.17-256,258.62-100,812.21

Finding the Fourth Proportional to 185,695.17, 256,258.62 and 100,812.21

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Solution

The fourth proportional to 185,695.17, 256,258.62 and 100,812.21 is: 139,120.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,695.17 : 256,258.62 = 100,812.21 : x
  2. Step 2: Convert to fraction form
    185,695.17/256,258.62 = 100,812.21/x
  3. Step 3: Cross multiply
    185,695.17x = 256,258.62 × 100,812.21
  4. Step 4: Simplify right side
    185,695.17x = 25,833,997,813.75
  5. Step 5: Solve for x
    x = 25,833,997,813.75/185,695.17
  6. Step 6: Final answer
    x = 139,120.46

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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.