Home / 103,777.30-143,215.55-63,490.33

Finding the Fourth Proportional to 103,777.30, 143,215.55 and 63,490.33

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Solution

The fourth proportional to 103,777.30, 143,215.55 and 63,490.33 is: 87,618.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,777.30 : 143,215.55 = 63,490.33 : x
  2. Step 2: Convert to fraction form
    103,777.30/143,215.55 = 63,490.33/x
  3. Step 3: Cross multiply
    103,777.30x = 143,215.55 × 63,490.33
  4. Step 4: Simplify right side
    103,777.30x = 9,092,802,530.63
  5. Step 5: Solve for x
    x = 9,092,802,530.63/103,777.30
  6. Step 6: Final answer
    x = 87,618.41

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1.5x scale

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.