Home / 143,203.75-197,621.19-79,547.47

Finding the Fourth Proportional to 143,203.75, 197,621.19 and 79,547.47

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Solution

The fourth proportional to 143,203.75, 197,621.19 and 79,547.47 is: 109,775.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,203.75 : 197,621.19 = 79,547.47 : x
  2. Step 2: Convert to fraction form
    143,203.75/197,621.19 = 79,547.47/x
  3. Step 3: Cross multiply
    143,203.75x = 197,621.19 × 79,547.47
  4. Step 4: Simplify right side
    143,203.75x = 15,720,265,682.89
  5. Step 5: Solve for x
    x = 15,720,265,682.89/143,203.75
  6. Step 6: Final answer
    x = 109,775.52

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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.