Home / 142,141.38-196,155.47-77,610.70

Finding the Fourth Proportional to 142,141.38, 196,155.47 and 77,610.70

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Solution

The fourth proportional to 142,141.38, 196,155.47 and 77,610.70 is: 107,102.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,141.38 : 196,155.47 = 77,610.70 : x
  2. Step 2: Convert to fraction form
    142,141.38/196,155.47 = 77,610.70/x
  3. Step 3: Cross multiply
    142,141.38x = 196,155.47 × 77,610.70
  4. Step 4: Simplify right side
    142,141.38x = 15,223,763,774.75
  5. Step 5: Solve for x
    x = 15,223,763,774.75/142,141.38
  6. Step 6: Final answer
    x = 107,102.97

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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.