Home / 143,130.54-197,505.71-79,461.42

Finding the Fourth Proportional to 143,130.54, 197,505.71 and 79,461.42

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Solution

The fourth proportional to 143,130.54, 197,505.71 and 79,461.42 is: 109,648.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,130.54 : 197,505.71 = 79,461.42 : x
  2. Step 2: Convert to fraction form
    143,130.54/197,505.71 = 79,461.42/x
  3. Step 3: Cross multiply
    143,130.54x = 197,505.71 × 79,461.42
  4. Step 4: Simplify right side
    143,130.54x = 15,694,084,174.71
  5. Step 5: Solve for x
    x = 15,694,084,174.71/143,130.54
  6. Step 6: Final answer
    x = 109,648.75

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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.