Home / 142,787.03-197,047.28-79,125.89

Finding the Fourth Proportional to 142,787.03, 197,047.28 and 79,125.89

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Solution

The fourth proportional to 142,787.03, 197,047.28 and 79,125.89 is: 109,194.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,787.03 : 197,047.28 = 79,125.89 : x
  2. Step 2: Convert to fraction form
    142,787.03/197,047.28 = 79,125.89/x
  3. Step 3: Cross multiply
    142,787.03x = 197,047.28 × 79,125.89
  4. Step 4: Simplify right side
    142,787.03x = 15,591,542,092.51
  5. Step 5: Solve for x
    x = 15,591,542,092.51/142,787.03
  6. Step 6: Final answer
    x = 109,194.38

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1.5x scale

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.