Home / 125,140.75-172,692.81-67,778.98

Finding the Fourth Proportional to 125,140.75, 172,692.81 and 67,778.98

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Solution

The fourth proportional to 125,140.75, 172,692.81 and 67,778.98 is: 93,534.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,140.75 : 172,692.81 = 67,778.98 : x
  2. Step 2: Convert to fraction form
    125,140.75/172,692.81 = 67,778.98/x
  3. Step 3: Cross multiply
    125,140.75x = 172,692.81 × 67,778.98
  4. Step 4: Simplify right side
    125,140.75x = 11,704,942,083.40
  5. Step 5: Solve for x
    x = 11,704,942,083.40/125,140.75
  6. Step 6: Final answer
    x = 93,534.22

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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.