Home / 142,125.54-196,133.50-78,463.38

Finding the Fourth Proportional to 142,125.54, 196,133.50 and 78,463.38

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Solution

The fourth proportional to 142,125.54, 196,133.50 and 78,463.38 is: 108,279.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,125.54 : 196,133.50 = 78,463.38 : x
  2. Step 2: Convert to fraction form
    142,125.54/196,133.50 = 78,463.38/x
  3. Step 3: Cross multiply
    142,125.54x = 196,133.50 × 78,463.38
  4. Step 4: Simplify right side
    142,125.54x = 15,389,298,174.81
  5. Step 5: Solve for x
    x = 15,389,298,174.81/142,125.54
  6. Step 6: Final answer
    x = 108,279.61

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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.