Home / 190,942.08-286,416-66,286.08

Finding the Fourth Proportional to 190,942.08, 286,416 and 66,286.08

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Solution

The fourth proportional to 190,942.08, 286,416 and 66,286.08 is: 99,430.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,942.08 : 286,416 = 66,286.08 : x
  2. Step 2: Convert to fraction form
    190,942.08/286,416 = 66,286.08/x
  3. Step 3: Cross multiply
    190,942.08x = 286,416 × 66,286.08
  4. Step 4: Simplify right side
    190,942.08x = 18,985,393,889.28
  5. Step 5: Solve for x
    x = 18,985,393,889.28/190,942.08
  6. Step 6: Final answer
    x = 99,430.12

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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.