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Finding the Fourth Proportional to 145,745.76, 201,123.90 and 82,089.48

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Solution

The fourth proportional to 145,745.76, 201,123.90 and 82,089.48 is: 113,280.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,745.76 : 201,123.90 = 82,089.48 : x
  2. Step 2: Convert to fraction form
    145,745.76/201,123.90 = 82,089.48/x
  3. Step 3: Cross multiply
    145,745.76x = 201,123.90 × 82,089.48
  4. Step 4: Simplify right side
    145,745.76x = 16,510,156,366.57
  5. Step 5: Solve for x
    x = 16,510,156,366.57/145,745.76
  6. Step 6: Final answer
    x = 113,280.53

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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.