Home / 185,790.15-256,386.20-100,905.39

Finding the Fourth Proportional to 185,790.15, 256,386.20 and 100,905.39

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Solution

The fourth proportional to 185,790.15, 256,386.20 and 100,905.39 is: 139,247.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,790.15 : 256,386.20 = 100,905.39 : x
  2. Step 2: Convert to fraction form
    185,790.15/256,386.20 = 100,905.39/x
  3. Step 3: Cross multiply
    185,790.15x = 256,386.20 × 100,905.39
  4. Step 4: Simplify right side
    185,790.15x = 25,870,748,997.09
  5. Step 5: Solve for x
    x = 25,870,748,997.09/185,790.15
  6. Step 6: Final answer
    x = 139,247.15

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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.