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Finding the Fourth Proportional to 185,283.90, 255,692.03 and 100,400.90

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Solution

The fourth proportional to 185,283.90, 255,692.03 and 100,400.90 is: 138,553.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,283.90 : 255,692.03 = 100,400.90 : x
  2. Step 2: Convert to fraction form
    185,283.90/255,692.03 = 100,400.90/x
  3. Step 3: Cross multiply
    185,283.90x = 255,692.03 × 100,400.90
  4. Step 4: Simplify right side
    185,283.90x = 25,671,708,154.36
  5. Step 5: Solve for x
    x = 25,671,708,154.36/185,283.90
  6. Step 6: Final answer
    x = 138,553.37

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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.