Home / 145,631.42-200,971.32-81,969.56

Finding the Fourth Proportional to 145,631.42, 200,971.32 and 81,969.56

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Solution

The fourth proportional to 145,631.42, 200,971.32 and 81,969.56 is: 113,117.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,631.42 : 200,971.32 = 81,969.56 : x
  2. Step 2: Convert to fraction form
    145,631.42/200,971.32 = 81,969.56/x
  3. Step 3: Cross multiply
    145,631.42x = 200,971.32 × 81,969.56
  4. Step 4: Simplify right side
    145,631.42x = 16,473,530,673.02
  5. Step 5: Solve for x
    x = 16,473,530,673.02/145,631.42
  6. Step 6: Final answer
    x = 113,117.97

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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.