Home / 171,384.15-257,128.74-76,694.04

Finding the Fourth Proportional to 171,384.15, 257,128.74 and 76,694.04

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Solution

The fourth proportional to 171,384.15, 257,128.74 and 76,694.04 is: 115,064.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,384.15 : 257,128.74 = 76,694.04 : x
  2. Step 2: Convert to fraction form
    171,384.15/257,128.74 = 76,694.04/x
  3. Step 3: Cross multiply
    171,384.15x = 257,128.74 × 76,694.04
  4. Step 4: Simplify right side
    171,384.15x = 19,720,241,870.71
  5. Step 5: Solve for x
    x = 19,720,241,870.71/171,384.15
  6. Step 6: Final answer
    x = 115,064.56

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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.