Home / 125,140.36-172,692.65-67,778.35

Finding the Fourth Proportional to 125,140.36, 172,692.65 and 67,778.35

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Solution

The fourth proportional to 125,140.36, 172,692.65 and 67,778.35 is: 93,533.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,140.36 : 172,692.65 = 67,778.35 : x
  2. Step 2: Convert to fraction form
    125,140.36/172,692.65 = 67,778.35/x
  3. Step 3: Cross multiply
    125,140.36x = 172,692.65 × 67,778.35
  4. Step 4: Simplify right side
    125,140.36x = 11,704,822,874.13
  5. Step 5: Solve for x
    x = 11,704,822,874.13/125,140.36
  6. Step 6: Final answer
    x = 93,533.56

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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.