Home / 142,929.20-197,254.41-79,287.50

Finding the Fourth Proportional to 142,929.20, 197,254.41 and 79,287.50

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Solution

The fourth proportional to 142,929.20, 197,254.41 and 79,287.50 is: 109,423.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,929.20 : 197,254.41 = 79,287.50 : x
  2. Step 2: Convert to fraction form
    142,929.20/197,254.41 = 79,287.50/x
  3. Step 3: Cross multiply
    142,929.20x = 197,254.41 × 79,287.50
  4. Step 4: Simplify right side
    142,929.20x = 15,639,809,032.88
  5. Step 5: Solve for x
    x = 15,639,809,032.88/142,929.20
  6. Step 6: Final answer
    x = 109,423.47

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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.