Home / 142,054.32-196,039.67-77,527.09

Finding the Fourth Proportional to 142,054.32, 196,039.67 and 77,527.09

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Solution

The fourth proportional to 142,054.32, 196,039.67 and 77,527.09 is: 106,989.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,054.32 : 196,039.67 = 77,527.09 : x
  2. Step 2: Convert to fraction form
    142,054.32/196,039.67 = 77,527.09/x
  3. Step 3: Cross multiply
    142,054.32x = 196,039.67 × 77,527.09
  4. Step 4: Simplify right side
    142,054.32x = 15,198,385,139.66
  5. Step 5: Solve for x
    x = 15,198,385,139.66/142,054.32
  6. Step 6: Final answer
    x = 106,989.95

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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.