Home / 185,661.15-256,210.72-100,778.14

Finding the Fourth Proportional to 185,661.15, 256,210.72 and 100,778.14

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Solution

The fourth proportional to 185,661.15, 256,210.72 and 100,778.14 is: 139,072.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,661.15 : 256,210.72 = 100,778.14 : x
  2. Step 2: Convert to fraction form
    185,661.15/256,210.72 = 100,778.14/x
  3. Step 3: Cross multiply
    185,661.15x = 256,210.72 × 100,778.14
  4. Step 4: Simplify right side
    185,661.15x = 25,820,439,809.66
  5. Step 5: Solve for x
    x = 25,820,439,809.66/185,661.15
  6. Step 6: Final answer
    x = 139,072.93

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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.