Home / 143,137.20-197,525.54-79,473.36

Finding the Fourth Proportional to 143,137.20, 197,525.54 and 79,473.36

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Solution

The fourth proportional to 143,137.20, 197,525.54 and 79,473.36 is: 109,671.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,137.20 : 197,525.54 = 79,473.36 : x
  2. Step 2: Convert to fraction form
    143,137.20/197,525.54 = 79,473.36/x
  3. Step 3: Cross multiply
    143,137.20x = 197,525.54 × 79,473.36
  4. Step 4: Simplify right side
    143,137.20x = 15,698,018,349.61
  5. Step 5: Solve for x
    x = 15,698,018,349.61/143,137.20
  6. Step 6: Final answer
    x = 109,671.13

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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.