Home / 145,166.56-200,330.64-81,503.20

Finding the Fourth Proportional to 145,166.56, 200,330.64 and 81,503.20

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Solution

The fourth proportional to 145,166.56, 200,330.64 and 81,503.20 is: 112,474.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,166.56 : 200,330.64 = 81,503.20 : x
  2. Step 2: Convert to fraction form
    145,166.56/200,330.64 = 81,503.20/x
  3. Step 3: Cross multiply
    145,166.56x = 200,330.64 × 81,503.20
  4. Step 4: Simplify right side
    145,166.56x = 16,327,588,218.05
  5. Step 5: Solve for x
    x = 16,327,588,218.05/145,166.56
  6. Step 6: Final answer
    x = 112,474.86

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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.