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Finding the Fourth Proportional to 103,745.70, 155,272.95 and 91,304.10

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Solution

The fourth proportional to 103,745.70, 155,272.95 and 91,304.10 is: 136,652.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,745.70 : 155,272.95 = 91,304.10 : x
  2. Step 2: Convert to fraction form
    103,745.70/155,272.95 = 91,304.10/x
  3. Step 3: Cross multiply
    103,745.70x = 155,272.95 × 91,304.10
  4. Step 4: Simplify right side
    103,745.70x = 14,177,056,954.10
  5. Step 5: Solve for x
    x = 14,177,056,954.10/103,745.70
  6. Step 6: Final answer
    x = 136,652.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.