Home / 100,136.25-138,188.16-62,410.50

Finding the Fourth Proportional to 100,136.25, 138,188.16 and 62,410.50

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Solution

The fourth proportional to 100,136.25, 138,188.16 and 62,410.50 is: 86,126.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,136.25 : 138,188.16 = 62,410.50 : x
  2. Step 2: Convert to fraction form
    100,136.25/138,188.16 = 62,410.50/x
  3. Step 3: Cross multiply
    100,136.25x = 138,188.16 × 62,410.50
  4. Step 4: Simplify right side
    100,136.25x = 8,624,392,159.68
  5. Step 5: Solve for x
    x = 8,624,392,159.68/100,136.25
  6. Step 6: Final answer
    x = 86,126.57

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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.