Home / 101,136.06-139,580.19-60,870.78

Finding the Fourth Proportional to 101,136.06, 139,580.19 and 60,870.78

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Solution

The fourth proportional to 101,136.06, 139,580.19 and 60,870.78 is: 84,009.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,136.06 : 139,580.19 = 60,870.78 : x
  2. Step 2: Convert to fraction form
    101,136.06/139,580.19 = 60,870.78/x
  3. Step 3: Cross multiply
    101,136.06x = 139,580.19 × 60,870.78
  4. Step 4: Simplify right side
    101,136.06x = 8,496,355,037.85
  5. Step 5: Solve for x
    x = 8,496,355,037.85/101,136.06
  6. Step 6: Final answer
    x = 84,009.16

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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.