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Finding the Fourth Proportional to 142,790.48, 197,022.48 and 86,204.96

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Solution

The fourth proportional to 142,790.48, 197,022.48 and 86,204.96 is: 118,945.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,790.48 : 197,022.48 = 86,204.96 : x
  2. Step 2: Convert to fraction form
    142,790.48/197,022.48 = 86,204.96/x
  3. Step 3: Cross multiply
    142,790.48x = 197,022.48 × 86,204.96
  4. Step 4: Simplify right side
    142,790.48x = 16,984,315,007.50
  5. Step 5: Solve for x
    x = 16,984,315,007.50/142,790.48
  6. Step 6: Final answer
    x = 118,945.71

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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.