Home / 207,111.06-310,601.31-66,840.66

Finding the Fourth Proportional to 207,111.06, 310,601.31 and 66,840.66

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Solution

The fourth proportional to 207,111.06, 310,601.31 and 66,840.66 is: 100,239.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,111.06 : 310,601.31 = 66,840.66 : x
  2. Step 2: Convert to fraction form
    207,111.06/310,601.31 = 66,840.66/x
  3. Step 3: Cross multiply
    207,111.06x = 310,601.31 × 66,840.66
  4. Step 4: Simplify right side
    207,111.06x = 20,760,796,557.26
  5. Step 5: Solve for x
    x = 20,760,796,557.26/207,111.06
  6. Step 6: Final answer
    x = 100,239.92

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1.5x scale

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.