Home / 103,905.28-143,389.97-56,158.57

Finding the Fourth Proportional to 103,905.28, 143,389.97 and 56,158.57

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Solution

The fourth proportional to 103,905.28, 143,389.97 and 56,158.57 is: 77,499.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,905.28 : 143,389.97 = 56,158.57 : x
  2. Step 2: Convert to fraction form
    103,905.28/143,389.97 = 56,158.57/x
  3. Step 3: Cross multiply
    103,905.28x = 143,389.97 × 56,158.57
  4. Step 4: Simplify right side
    103,905.28x = 8,052,575,667.54
  5. Step 5: Solve for x
    x = 8,052,575,667.54/103,905.28
  6. Step 6: Final answer
    x = 77,499.20

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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.