Home / 142,163.13-196,185.52-77,632.96

Finding the Fourth Proportional to 142,163.13, 196,185.52 and 77,632.96

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Solution

The fourth proportional to 142,163.13, 196,185.52 and 77,632.96 is: 107,133.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,163.13 : 196,185.52 = 77,632.96 : x
  2. Step 2: Convert to fraction form
    142,163.13/196,185.52 = 77,632.96/x
  3. Step 3: Cross multiply
    142,163.13x = 196,185.52 × 77,632.96
  4. Step 4: Simplify right side
    142,163.13x = 15,230,461,831.05
  5. Step 5: Solve for x
    x = 15,230,461,831.05/142,163.13
  6. Step 6: Final answer
    x = 107,133.70

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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.