Home / 145,186.43-200,324.54-81,520.02

Finding the Fourth Proportional to 145,186.43, 200,324.54 and 81,520.02

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Solution

The fourth proportional to 145,186.43, 200,324.54 and 81,520.02 is: 112,479.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,186.43 : 200,324.54 = 81,520.02 : x
  2. Step 2: Convert to fraction form
    145,186.43/200,324.54 = 81,520.02/x
  3. Step 3: Cross multiply
    145,186.43x = 200,324.54 × 81,520.02
  4. Step 4: Simplify right side
    145,186.43x = 16,330,460,711.09
  5. Step 5: Solve for x
    x = 16,330,460,711.09/145,186.43
  6. Step 6: Final answer
    x = 112,479.25

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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.