Home / 125,138.21-172,690.95-67,777.66

Finding the Fourth Proportional to 125,138.21, 172,690.95 and 67,777.66

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Solution

The fourth proportional to 125,138.21, 172,690.95 and 67,777.66 is: 93,533.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,138.21 : 172,690.95 = 67,777.66 : x
  2. Step 2: Convert to fraction form
    125,138.21/172,690.95 = 67,777.66/x
  3. Step 3: Cross multiply
    125,138.21x = 172,690.95 × 67,777.66
  4. Step 4: Simplify right side
    125,138.21x = 11,704,588,494.18
  5. Step 5: Solve for x
    x = 11,704,588,494.18/125,138.21
  6. Step 6: Final answer
    x = 93,533.29

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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.