Home / 142,783.02-197,042.22-79,121.88

Finding the Fourth Proportional to 142,783.02, 197,042.22 and 79,121.88

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Solution

The fourth proportional to 142,783.02, 197,042.22 and 79,121.88 is: 109,189.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,783.02 : 197,042.22 = 79,121.88 : x
  2. Step 2: Convert to fraction form
    142,783.02/197,042.22 = 79,121.88/x
  3. Step 3: Cross multiply
    142,783.02x = 197,042.22 × 79,121.88
  4. Step 4: Simplify right side
    142,783.02x = 15,590,350,885.77
  5. Step 5: Solve for x
    x = 15,590,350,885.77/142,783.02
  6. Step 6: Final answer
    x = 109,189.11

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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.