Home / 125,131.36-187,539.60-89,406.64

Finding the Fourth Proportional to 125,131.36, 187,539.60 and 89,406.64

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Solution

The fourth proportional to 125,131.36, 187,539.60 and 89,406.64 is: 133,997.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,131.36 : 187,539.60 = 89,406.64 : x
  2. Step 2: Convert to fraction form
    125,131.36/187,539.60 = 89,406.64/x
  3. Step 3: Cross multiply
    125,131.36x = 187,539.60 × 89,406.64
  4. Step 4: Simplify right side
    125,131.36x = 16,767,285,502.94
  5. Step 5: Solve for x
    x = 16,767,285,502.94/125,131.36
  6. Step 6: Final answer
    x = 133,997.47

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.