Home / 142,529.88-196,688.46-78,867.72

Finding the Fourth Proportional to 142,529.88, 196,688.46 and 78,867.72

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Solution

The fourth proportional to 142,529.88, 196,688.46 and 78,867.72 is: 108,835.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,529.88 : 196,688.46 = 78,867.72 : x
  2. Step 2: Convert to fraction form
    142,529.88/196,688.46 = 78,867.72/x
  3. Step 3: Cross multiply
    142,529.88x = 196,688.46 × 78,867.72
  4. Step 4: Simplify right side
    142,529.88x = 15,512,370,390.51
  5. Step 5: Solve for x
    x = 15,512,370,390.51/142,529.88
  6. Step 6: Final answer
    x = 108,835.92

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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.