Home / 143,098.37-197,465.84-79,431.15

Finding the Fourth Proportional to 143,098.37, 197,465.84 and 79,431.15

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Solution

The fourth proportional to 143,098.37, 197,465.84 and 79,431.15 is: 109,609.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,098.37 : 197,465.84 = 79,431.15 : x
  2. Step 2: Convert to fraction form
    143,098.37/197,465.84 = 79,431.15/x
  3. Step 3: Cross multiply
    143,098.37x = 197,465.84 × 79,431.15
  4. Step 4: Simplify right side
    143,098.37x = 15,684,938,359.76
  5. Step 5: Solve for x
    x = 15,684,938,359.76/143,098.37
  6. Step 6: Final answer
    x = 109,609.49

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1.5x scale

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.