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Finding the Fourth Proportional to 185,118.84, 255,465.72 and 100,237.68

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Solution

The fourth proportional to 185,118.84, 255,465.72 and 100,237.68 is: 138,328.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,118.84 : 255,465.72 = 100,237.68 : x
  2. Step 2: Convert to fraction form
    185,118.84/255,465.72 = 100,237.68/x
  3. Step 3: Cross multiply
    185,118.84x = 255,465.72 × 100,237.68
  4. Step 4: Simplify right side
    185,118.84x = 25,607,291,092.33
  5. Step 5: Solve for x
    x = 25,607,291,092.33/185,118.84
  6. Step 6: Final answer
    x = 138,328.93

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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.