Home / 100,433.64-138,600.24-55,116.02

Finding the Fourth Proportional to 100,433.64, 138,600.24 and 55,116.02

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Solution

The fourth proportional to 100,433.64, 138,600.24 and 55,116.02 is: 76,061.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,433.64 : 138,600.24 = 55,116.02 : x
  2. Step 2: Convert to fraction form
    100,433.64/138,600.24 = 55,116.02/x
  3. Step 3: Cross multiply
    100,433.64x = 138,600.24 × 55,116.02
  4. Step 4: Simplify right side
    100,433.64x = 7,639,093,599.84
  5. Step 5: Solve for x
    x = 7,639,093,599.84/100,433.64
  6. Step 6: Final answer
    x = 76,061.10

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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.