Home / 138,873.06-191,644.41-75,210.72

Finding the Fourth Proportional to 138,873.06, 191,644.41 and 75,210.72

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Solution

The fourth proportional to 138,873.06, 191,644.41 and 75,210.72 is: 103,790.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,873.06 : 191,644.41 = 75,210.72 : x
  2. Step 2: Convert to fraction form
    138,873.06/191,644.41 = 75,210.72/x
  3. Step 3: Cross multiply
    138,873.06x = 191,644.41 × 75,210.72
  4. Step 4: Simplify right side
    138,873.06x = 14,413,714,060.08
  5. Step 5: Solve for x
    x = 14,413,714,060.08/138,873.06
  6. Step 6: Final answer
    x = 103,790.57

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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.