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Finding the Fourth Proportional to 124,515.70, 186,822.15 and 45,637.90

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Solution

The fourth proportional to 124,515.70, 186,822.15 and 45,637.90 is: 68,474.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,515.70 : 186,822.15 = 45,637.90 : x
  2. Step 2: Convert to fraction form
    124,515.70/186,822.15 = 45,637.90/x
  3. Step 3: Cross multiply
    124,515.70x = 186,822.15 × 45,637.90
  4. Step 4: Simplify right side
    124,515.70x = 8,526,170,599.49
  5. Step 5: Solve for x
    x = 8,526,170,599.49/124,515.70
  6. Step 6: Final answer
    x = 68,474.66

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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.