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Finding the Fourth Proportional to 141,744.77, 212,510.25 and 85,571.53

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Solution

The fourth proportional to 141,744.77, 212,510.25 and 85,571.53 is: 128,292.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,744.77 : 212,510.25 = 85,571.53 : x
  2. Step 2: Convert to fraction form
    141,744.77/212,510.25 = 85,571.53/x
  3. Step 3: Cross multiply
    141,744.77x = 212,510.25 × 85,571.53
  4. Step 4: Simplify right side
    141,744.77x = 18,184,826,170.63
  5. Step 5: Solve for x
    x = 18,184,826,170.63/141,744.77
  6. Step 6: Final answer
    x = 128,292.75

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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.