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Finding the Fourth Proportional to 145,765.55, 201,087.72 and 85,299.10

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Solution

The fourth proportional to 145,765.55, 201,087.72 and 85,299.10 is: 117,672.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,765.55 : 201,087.72 = 85,299.10 : x
  2. Step 2: Convert to fraction form
    145,765.55/201,087.72 = 85,299.10/x
  3. Step 3: Cross multiply
    145,765.55x = 201,087.72 × 85,299.10
  4. Step 4: Simplify right side
    145,765.55x = 17,152,601,537.05
  5. Step 5: Solve for x
    x = 17,152,601,537.05/145,765.55
  6. Step 6: Final answer
    x = 117,672.53

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.