Home / 142,951.38-197,273.02-79,289.64

Finding the Fourth Proportional to 142,951.38, 197,273.02 and 79,289.64

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Solution

The fourth proportional to 142,951.38, 197,273.02 and 79,289.64 is: 109,419.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,951.38 : 197,273.02 = 79,289.64 : x
  2. Step 2: Convert to fraction form
    142,951.38/197,273.02 = 79,289.64/x
  3. Step 3: Cross multiply
    142,951.38x = 197,273.02 × 79,289.64
  4. Step 4: Simplify right side
    142,951.38x = 15,641,706,737.51
  5. Step 5: Solve for x
    x = 15,641,706,737.51/142,951.38
  6. Step 6: Final answer
    x = 109,419.77

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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.