Home / 145,165.43-200,328.30-81,504.60

Finding the Fourth Proportional to 145,165.43, 200,328.30 and 81,504.60

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Solution

The fourth proportional to 145,165.43, 200,328.30 and 81,504.60 is: 112,476.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,165.43 : 200,328.30 = 81,504.60 : x
  2. Step 2: Convert to fraction form
    145,165.43/200,328.30 = 81,504.60/x
  3. Step 3: Cross multiply
    145,165.43x = 200,328.30 × 81,504.60
  4. Step 4: Simplify right side
    145,165.43x = 16,327,677,960.18
  5. Step 5: Solve for x
    x = 16,327,677,960.18/145,165.43
  6. Step 6: Final answer
    x = 112,476.35

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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.