Home / 239,065.40-329,917.51-131,639.28

Finding the Fourth Proportional to 239,065.40, 329,917.51 and 131,639.28

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Solution

The fourth proportional to 239,065.40, 329,917.51 and 131,639.28 is: 181,666.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,065.40 : 329,917.51 = 131,639.28 : x
  2. Step 2: Convert to fraction form
    239,065.40/329,917.51 = 131,639.28/x
  3. Step 3: Cross multiply
    239,065.40x = 329,917.51 × 131,639.28
  4. Step 4: Simplify right side
    239,065.40x = 43,430,103,475.79
  5. Step 5: Solve for x
    x = 43,430,103,475.79/239,065.40
  6. Step 6: Final answer
    x = 181,666.20

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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.