Home / 199,719.16-275,143.64-139,179.76

Finding the Fourth Proportional to 199,719.16, 275,143.64 and 139,179.76

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Solution

The fourth proportional to 199,719.16, 275,143.64 and 139,179.76 is: 191,741.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,719.16 : 275,143.64 = 139,179.76 : x
  2. Step 2: Convert to fraction form
    199,719.16/275,143.64 = 139,179.76/x
  3. Step 3: Cross multiply
    199,719.16x = 275,143.64 × 139,179.76
  4. Step 4: Simplify right side
    199,719.16x = 38,294,425,780.73
  5. Step 5: Solve for x
    x = 38,294,425,780.73/199,719.16
  6. Step 6: Final answer
    x = 191,741.37

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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.