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Finding the Fourth Proportional to 90,140.67, 124,361.39 and 69,450.98

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Solution

The fourth proportional to 90,140.67, 124,361.39 and 69,450.98 is: 95,817.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,140.67 : 124,361.39 = 69,450.98 : x
  2. Step 2: Convert to fraction form
    90,140.67/124,361.39 = 69,450.98/x
  3. Step 3: Cross multiply
    90,140.67x = 124,361.39 × 69,450.98
  4. Step 4: Simplify right side
    90,140.67x = 8,637,019,961.48
  5. Step 5: Solve for x
    x = 8,637,019,961.48/90,140.67
  6. Step 6: Final answer
    x = 95,817.13

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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.