Home / 143,073.30-197,458.65-79,431.60

Finding the Fourth Proportional to 143,073.30, 197,458.65 and 79,431.60

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Solution

The fourth proportional to 143,073.30, 197,458.65 and 79,431.60 is: 109,625.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,073.30 : 197,458.65 = 79,431.60 : x
  2. Step 2: Convert to fraction form
    143,073.30/197,458.65 = 79,431.60/x
  3. Step 3: Cross multiply
    143,073.30x = 197,458.65 × 79,431.60
  4. Step 4: Simplify right side
    143,073.30x = 15,684,456,503.34
  5. Step 5: Solve for x
    x = 15,684,456,503.34/143,073.30
  6. Step 6: Final answer
    x = 109,625.32

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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.