Home / 190,680.77-286,038-70,739.09

Finding the Fourth Proportional to 190,680.77, 286,038 and 70,739.09

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Solution

The fourth proportional to 190,680.77, 286,038 and 70,739.09 is: 106,114.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,680.77 : 286,038 = 70,739.09 : x
  2. Step 2: Convert to fraction form
    190,680.77/286,038 = 70,739.09/x
  3. Step 3: Cross multiply
    190,680.77x = 286,038 × 70,739.09
  4. Step 4: Simplify right side
    190,680.77x = 20,234,067,825.42
  5. Step 5: Solve for x
    x = 20,234,067,825.42/190,680.77
  6. Step 6: Final answer
    x = 106,114.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.