Home / 142,784.03-197,043.13-79,122.89

Finding the Fourth Proportional to 142,784.03, 197,043.13 and 79,122.89

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Solution

The fourth proportional to 142,784.03, 197,043.13 and 79,122.89 is: 109,190.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,784.03 : 197,043.13 = 79,122.89 : x
  2. Step 2: Convert to fraction form
    142,784.03/197,043.13 = 79,122.89/x
  3. Step 3: Cross multiply
    142,784.03x = 197,043.13 × 79,122.89
  4. Step 4: Simplify right side
    142,784.03x = 15,590,622,491.76
  5. Step 5: Solve for x
    x = 15,590,622,491.76/142,784.03
  6. Step 6: Final answer
    x = 109,190.24

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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.