Home / 143,028.34-197,452.62-100,775.50

Finding the Fourth Proportional to 143,028.34, 197,452.62 and 100,775.50

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Solution

The fourth proportional to 143,028.34, 197,452.62 and 100,775.50 is: 139,121.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,028.34 : 197,452.62 = 100,775.50 : x
  2. Step 2: Convert to fraction form
    143,028.34/197,452.62 = 100,775.50/x
  3. Step 3: Cross multiply
    143,028.34x = 197,452.62 × 100,775.50
  4. Step 4: Simplify right side
    143,028.34x = 19,898,386,506.81
  5. Step 5: Solve for x
    x = 19,898,386,506.81/143,028.34
  6. Step 6: Final answer
    x = 139,121.98

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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.