Home / 143,127.30-197,507.95-79,461

Finding the Fourth Proportional to 143,127.30, 197,507.95 and 79,461

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Solution

The fourth proportional to 143,127.30, 197,507.95 and 79,461 is: 109,651.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,127.30 : 197,507.95 = 79,461 : x
  2. Step 2: Convert to fraction form
    143,127.30/197,507.95 = 79,461/x
  3. Step 3: Cross multiply
    143,127.30x = 197,507.95 × 79,461
  4. Step 4: Simplify right side
    143,127.30x = 15,694,179,214.95
  5. Step 5: Solve for x
    x = 15,694,179,214.95/143,127.30
  6. Step 6: Final answer
    x = 109,651.89

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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.