Home / 145,322.59-200,563.97-81,660.39

Finding the Fourth Proportional to 145,322.59, 200,563.97 and 81,660.39

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Solution

The fourth proportional to 145,322.59, 200,563.97 and 81,660.39 is: 112,701.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,322.59 : 200,563.97 = 81,660.39 : x
  2. Step 2: Convert to fraction form
    145,322.59/200,563.97 = 81,660.39/x
  3. Step 3: Cross multiply
    145,322.59x = 200,563.97 × 81,660.39
  4. Step 4: Simplify right side
    145,322.59x = 16,378,132,010.15
  5. Step 5: Solve for x
    x = 16,378,132,010.15/145,322.59
  6. Step 6: Final answer
    x = 112,701.90

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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.