Home / 143,987.51-198,702.15-80,325.36

Finding the Fourth Proportional to 143,987.51, 198,702.15 and 80,325.36

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Solution

The fourth proportional to 143,987.51, 198,702.15 and 80,325.36 is: 110,848.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,987.51 : 198,702.15 = 80,325.36 : x
  2. Step 2: Convert to fraction form
    143,987.51/198,702.15 = 80,325.36/x
  3. Step 3: Cross multiply
    143,987.51x = 198,702.15 × 80,325.36
  4. Step 4: Simplify right side
    143,987.51x = 15,960,821,731.52
  5. Step 5: Solve for x
    x = 15,960,821,731.52/143,987.51
  6. Step 6: Final answer
    x = 110,848.66

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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.