Home / 142,784.92-197,040.06-79,122.52

Finding the Fourth Proportional to 142,784.92, 197,040.06 and 79,122.52

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Solution

The fourth proportional to 142,784.92, 197,040.06 and 79,122.52 is: 109,187.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,784.92 : 197,040.06 = 79,122.52 : x
  2. Step 2: Convert to fraction form
    142,784.92/197,040.06 = 79,122.52/x
  3. Step 3: Cross multiply
    142,784.92x = 197,040.06 × 79,122.52
  4. Step 4: Simplify right side
    142,784.92x = 15,590,306,088.15
  5. Step 5: Solve for x
    x = 15,590,306,088.15/142,784.92
  6. Step 6: Final answer
    x = 109,187.34

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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.