Home / 149,041.11-205,705.94-85,421.55

Finding the Fourth Proportional to 149,041.11, 205,705.94 and 85,421.55

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Solution

The fourth proportional to 149,041.11, 205,705.94 and 85,421.55 is: 117,898.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,041.11 : 205,705.94 = 85,421.55 : x
  2. Step 2: Convert to fraction form
    149,041.11/205,705.94 = 85,421.55/x
  3. Step 3: Cross multiply
    149,041.11x = 205,705.94 × 85,421.55
  4. Step 4: Simplify right side
    149,041.11x = 17,571,719,811.90
  5. Step 5: Solve for x
    x = 17,571,719,811.90/149,041.11
  6. Step 6: Final answer
    x = 117,898.48

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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.