Home / 142,415.28-196,534.36-78,757.36

Finding the Fourth Proportional to 142,415.28, 196,534.36 and 78,757.36

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Solution

The fourth proportional to 142,415.28, 196,534.36 and 78,757.36 is: 108,685.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,415.28 : 196,534.36 = 78,757.36 : x
  2. Step 2: Convert to fraction form
    142,415.28/196,534.36 = 78,757.36/x
  3. Step 3: Cross multiply
    142,415.28x = 196,534.36 × 78,757.36
  4. Step 4: Simplify right side
    142,415.28x = 15,478,527,342.89
  5. Step 5: Solve for x
    x = 15,478,527,342.89/142,415.28
  6. Step 6: Final answer
    x = 108,685.86

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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.