Home / 190,499.52-285,729.12-78,191.58

Finding the Fourth Proportional to 190,499.52, 285,729.12 and 78,191.58

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Solution

The fourth proportional to 190,499.52, 285,729.12 and 78,191.58 is: 117,279.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,499.52 : 285,729.12 = 78,191.58 : x
  2. Step 2: Convert to fraction form
    190,499.52/285,729.12 = 78,191.58/x
  3. Step 3: Cross multiply
    190,499.52x = 285,729.12 × 78,191.58
  4. Step 4: Simplify right side
    190,499.52x = 22,341,611,344.81
  5. Step 5: Solve for x
    x = 22,341,611,344.81/190,499.52
  6. Step 6: Final answer
    x = 117,279.10

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1.5x scale

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.