Home / 190,259.64-285,364.80-71,915.58

Finding the Fourth Proportional to 190,259.64, 285,364.80 and 71,915.58

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Solution

The fourth proportional to 190,259.64, 285,364.80 and 71,915.58 is: 107,864.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,259.64 : 285,364.80 = 71,915.58 : x
  2. Step 2: Convert to fraction form
    190,259.64/285,364.80 = 71,915.58/x
  3. Step 3: Cross multiply
    190,259.64x = 285,364.80 × 71,915.58
  4. Step 4: Simplify right side
    190,259.64x = 20,522,175,103.58
  5. Step 5: Solve for x
    x = 20,522,175,103.58/190,259.64
  6. Step 6: Final answer
    x = 107,864.05

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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.