Home / 199,128.60-298,692.90-185,909.40

Finding the Fourth Proportional to 199,128.60, 298,692.90 and 185,909.40

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Solution

The fourth proportional to 199,128.60, 298,692.90 and 185,909.40 is: 278,864.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,128.60 : 298,692.90 = 185,909.40 : x
  2. Step 2: Convert to fraction form
    199,128.60/298,692.90 = 185,909.40/x
  3. Step 3: Cross multiply
    199,128.60x = 298,692.90 × 185,909.40
  4. Step 4: Simplify right side
    199,128.60x = 55,529,817,823.26
  5. Step 5: Solve for x
    x = 55,529,817,823.26/199,128.60
  6. Step 6: Final answer
    x = 278,864.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.