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Finding the Fourth Proportional to 103,804.40, 143,250.06 and 56,057.74

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Solution

The fourth proportional to 103,804.40, 143,250.06 and 56,057.74 is: 77,359.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,804.40 : 143,250.06 = 56,057.74 : x
  2. Step 2: Convert to fraction form
    103,804.40/143,250.06 = 56,057.74/x
  3. Step 3: Cross multiply
    103,804.40x = 143,250.06 × 56,057.74
  4. Step 4: Simplify right side
    103,804.40x = 8,030,274,649.62
  5. Step 5: Solve for x
    x = 8,030,274,649.62/103,804.40
  6. Step 6: Final answer
    x = 77,359.68

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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.