Home / 113,772.51-170,328.24-66,242.61

Finding the Fourth Proportional to 113,772.51, 170,328.24 and 66,242.61

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Solution

The fourth proportional to 113,772.51, 170,328.24 and 66,242.61 is: 99,171.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,772.51 : 170,328.24 = 66,242.61 : x
  2. Step 2: Convert to fraction form
    113,772.51/170,328.24 = 66,242.61/x
  3. Step 3: Cross multiply
    113,772.51x = 170,328.24 × 66,242.61
  4. Step 4: Simplify right side
    113,772.51x = 11,282,987,174.31
  5. Step 5: Solve for x
    x = 11,282,987,174.31/113,772.51
  6. Step 6: Final answer
    x = 99,171.47

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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.