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Finding the Fourth Proportional to 145,330.56, 200,549.72 and 84,906.80

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Solution

The fourth proportional to 145,330.56, 200,549.72 and 84,906.80 is: 117,167.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,330.56 : 200,549.72 = 84,906.80 : x
  2. Step 2: Convert to fraction form
    145,330.56/200,549.72 = 84,906.80/x
  3. Step 3: Cross multiply
    145,330.56x = 200,549.72 × 84,906.80
  4. Step 4: Simplify right side
    145,330.56x = 17,028,034,966.10
  5. Step 5: Solve for x
    x = 17,028,034,966.10/145,330.56
  6. Step 6: Final answer
    x = 117,167.61

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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.