Home / 185,915.21-256,562.26-105,358.07

Finding the Fourth Proportional to 185,915.21, 256,562.26 and 105,358.07

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Solution

The fourth proportional to 185,915.21, 256,562.26 and 105,358.07 is: 145,393.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,915.21 : 256,562.26 = 105,358.07 : x
  2. Step 2: Convert to fraction form
    185,915.21/256,562.26 = 105,358.07/x
  3. Step 3: Cross multiply
    185,915.21x = 256,562.26 × 105,358.07
  4. Step 4: Simplify right side
    185,915.21x = 27,030,904,926.45
  5. Step 5: Solve for x
    x = 27,030,904,926.45/185,915.21
  6. Step 6: Final answer
    x = 145,393.73

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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.