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Finding the Fourth Proportional to 185,361.17, 255,798.81 and 100,478.24

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Solution

The fourth proportional to 185,361.17, 255,798.81 and 100,478.24 is: 138,660.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,361.17 : 255,798.81 = 100,478.24 : x
  2. Step 2: Convert to fraction form
    185,361.17/255,798.81 = 100,478.24/x
  3. Step 3: Cross multiply
    185,361.17x = 255,798.81 × 100,478.24
  4. Step 4: Simplify right side
    185,361.17x = 25,702,212,943.90
  5. Step 5: Solve for x
    x = 25,702,212,943.90/185,361.17
  6. Step 6: Final answer
    x = 138,660.18

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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.