Home / 102,961.53-142,089.30-57,638.34

Finding the Fourth Proportional to 102,961.53, 142,089.30 and 57,638.34

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Solution

The fourth proportional to 102,961.53, 142,089.30 and 57,638.34 is: 79,542.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,961.53 : 142,089.30 = 57,638.34 : x
  2. Step 2: Convert to fraction form
    102,961.53/142,089.30 = 57,638.34/x
  3. Step 3: Cross multiply
    102,961.53x = 142,089.30 × 57,638.34
  4. Step 4: Simplify right side
    102,961.53x = 8,189,791,383.76
  5. Step 5: Solve for x
    x = 8,189,791,383.76/102,961.53
  6. Step 6: Final answer
    x = 79,542.25

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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.