Home / 123,408.80-170,307.26-75,688.46

Finding the Fourth Proportional to 123,408.80, 170,307.26 and 75,688.46

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Solution

The fourth proportional to 123,408.80, 170,307.26 and 75,688.46 is: 104,451.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,408.80 : 170,307.26 = 75,688.46 : x
  2. Step 2: Convert to fraction form
    123,408.80/170,307.26 = 75,688.46/x
  3. Step 3: Cross multiply
    123,408.80x = 170,307.26 × 75,688.46
  4. Step 4: Simplify right side
    123,408.80x = 12,890,293,006.24
  5. Step 5: Solve for x
    x = 12,890,293,006.24/123,408.80
  6. Step 6: Final answer
    x = 104,451.98

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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.