Home / 142,911.67-197,225.99-79,248.10

Finding the Fourth Proportional to 142,911.67, 197,225.99 and 79,248.10

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Solution

The fourth proportional to 142,911.67, 197,225.99 and 79,248.10 is: 109,366.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,911.67 : 197,225.99 = 79,248.10 : x
  2. Step 2: Convert to fraction form
    142,911.67/197,225.99 = 79,248.10/x
  3. Step 3: Cross multiply
    142,911.67x = 197,225.99 × 79,248.10
  4. Step 4: Simplify right side
    142,911.67x = 15,629,784,978.12
  5. Step 5: Solve for x
    x = 15,629,784,978.12/142,911.67
  6. Step 6: Final answer
    x = 109,366.75

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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.