Home / 142,856.40-197,136.60-82,429.56

Finding the Fourth Proportional to 142,856.40, 197,136.60 and 82,429.56

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Solution

The fourth proportional to 142,856.40, 197,136.60 and 82,429.56 is: 113,749.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,856.40 : 197,136.60 = 82,429.56 : x
  2. Step 2: Convert to fraction form
    142,856.40/197,136.60 = 82,429.56/x
  3. Step 3: Cross multiply
    142,856.40x = 197,136.60 × 82,429.56
  4. Step 4: Simplify right side
    142,856.40x = 16,249,883,197.90
  5. Step 5: Solve for x
    x = 16,249,883,197.90/142,856.40
  6. Step 6: Final answer
    x = 113,749.77

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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.