Home / 143,297.95-197,409.39-100,196.80

Finding the Fourth Proportional to 143,297.95, 197,409.39 and 100,196.80

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Solution

The fourth proportional to 143,297.95, 197,409.39 and 100,196.80 is: 138,032.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,297.95 : 197,409.39 = 100,196.80 : x
  2. Step 2: Convert to fraction form
    143,297.95/197,409.39 = 100,196.80/x
  3. Step 3: Cross multiply
    143,297.95x = 197,409.39 × 100,196.80
  4. Step 4: Simplify right side
    143,297.95x = 19,779,788,180.91
  5. Step 5: Solve for x
    x = 19,779,788,180.91/143,297.95
  6. Step 6: Final answer
    x = 138,032.60

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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.