Home / 137,199.42-189,275.13-80,585.28

Finding the Fourth Proportional to 137,199.42, 189,275.13 and 80,585.28

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Solution

The fourth proportional to 137,199.42, 189,275.13 and 80,585.28 is: 111,172.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,199.42 : 189,275.13 = 80,585.28 : x
  2. Step 2: Convert to fraction form
    137,199.42/189,275.13 = 80,585.28/x
  3. Step 3: Cross multiply
    137,199.42x = 189,275.13 × 80,585.28
  4. Step 4: Simplify right side
    137,199.42x = 15,252,789,348.09
  5. Step 5: Solve for x
    x = 15,252,789,348.09/137,199.42
  6. Step 6: Final answer
    x = 111,172.40

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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.