Home / 193,492.40-290,291.20-81,113.60

Finding the Fourth Proportional to 193,492.40, 290,291.20 and 81,113.60

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Solution

The fourth proportional to 193,492.40, 290,291.20 and 81,113.60 is: 121,692.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,492.40 : 290,291.20 = 81,113.60 : x
  2. Step 2: Convert to fraction form
    193,492.40/290,291.20 = 81,113.60/x
  3. Step 3: Cross multiply
    193,492.40x = 290,291.20 × 81,113.60
  4. Step 4: Simplify right side
    193,492.40x = 23,546,564,280.32
  5. Step 5: Solve for x
    x = 23,546,564,280.32/193,492.40
  6. Step 6: Final answer
    x = 121,692.45

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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.