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Finding the Fourth Proportional to 103,773.11, 155,543.02 and 51,219.50

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Solution

The fourth proportional to 103,773.11, 155,543.02 and 51,219.50 is: 76,771.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,773.11 : 155,543.02 = 51,219.50 : x
  2. Step 2: Convert to fraction form
    103,773.11/155,543.02 = 51,219.50/x
  3. Step 3: Cross multiply
    103,773.11x = 155,543.02 × 51,219.50
  4. Step 4: Simplify right side
    103,773.11x = 7,966,834,807.13
  5. Step 5: Solve for x
    x = 7,966,834,807.13/103,773.11
  6. Step 6: Final answer
    x = 76,771.67

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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.