Home / 142,024.36-196,002.66-78,361.96

Finding the Fourth Proportional to 142,024.36, 196,002.66 and 78,361.96

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Solution

The fourth proportional to 142,024.36, 196,002.66 and 78,361.96 is: 108,144.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,024.36 : 196,002.66 = 78,361.96 : x
  2. Step 2: Convert to fraction form
    142,024.36/196,002.66 = 78,361.96/x
  3. Step 3: Cross multiply
    142,024.36x = 196,002.66 × 78,361.96
  4. Step 4: Simplify right side
    142,024.36x = 15,359,152,602.81
  5. Step 5: Solve for x
    x = 15,359,152,602.81/142,024.36
  6. Step 6: Final answer
    x = 108,144.49

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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.