Home / 103,676.18-142,999.42-69,203.53

Finding the Fourth Proportional to 103,676.18, 142,999.42 and 69,203.53

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Solution

The fourth proportional to 103,676.18, 142,999.42 and 69,203.53 is: 95,451.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,676.18 : 142,999.42 = 69,203.53 : x
  2. Step 2: Convert to fraction form
    103,676.18/142,999.42 = 69,203.53/x
  3. Step 3: Cross multiply
    103,676.18x = 142,999.42 × 69,203.53
  4. Step 4: Simplify right side
    103,676.18x = 9,896,064,651.95
  5. Step 5: Solve for x
    x = 9,896,064,651.95/103,676.18
  6. Step 6: Final answer
    x = 95,451.67

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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.