Home / 103,906.28-143,390.45-56,159.53

Finding the Fourth Proportional to 103,906.28, 143,390.45 and 56,159.53

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Solution

The fourth proportional to 103,906.28, 143,390.45 and 56,159.53 is: 77,500.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,906.28 : 143,390.45 = 56,159.53 : x
  2. Step 2: Convert to fraction form
    103,906.28/143,390.45 = 56,159.53/x
  3. Step 3: Cross multiply
    103,906.28x = 143,390.45 × 56,159.53
  4. Step 4: Simplify right side
    103,906.28x = 8,052,740,060.41
  5. Step 5: Solve for x
    x = 8,052,740,060.41/103,906.28
  6. Step 6: Final answer
    x = 77,500.03

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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.