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Finding the Fourth Proportional to 145,237.79, 200,446.97 and 81,575.60

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Solution

The fourth proportional to 145,237.79, 200,446.97 and 81,575.60 is: 112,584.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,237.79 : 200,446.97 = 81,575.60 : x
  2. Step 2: Convert to fraction form
    145,237.79/200,446.97 = 81,575.60/x
  3. Step 3: Cross multiply
    145,237.79x = 200,446.97 × 81,575.60
  4. Step 4: Simplify right side
    145,237.79x = 16,351,580,435.82
  5. Step 5: Solve for x
    x = 16,351,580,435.82/145,237.79
  6. Step 6: Final answer
    x = 112,584.89

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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.