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Finding the Fourth Proportional to 105,361.70, 145,562.87 and 88,339.55

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Solution

The fourth proportional to 105,361.70, 145,562.87 and 88,339.55 is: 122,045.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,361.70 : 145,562.87 = 88,339.55 : x
  2. Step 2: Convert to fraction form
    105,361.70/145,562.87 = 88,339.55/x
  3. Step 3: Cross multiply
    105,361.70x = 145,562.87 × 88,339.55
  4. Step 4: Simplify right side
    105,361.70x = 12,858,957,925.54
  5. Step 5: Solve for x
    x = 12,858,957,925.54/105,361.70
  6. Step 6: Final answer
    x = 122,045.85

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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.