Home / 257,106.06-385,818.39-123,999.66

Finding the Fourth Proportional to 257,106.06, 385,818.39 and 123,999.66

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Solution

The fourth proportional to 257,106.06, 385,818.39 and 123,999.66 is: 186,076.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,106.06 : 385,818.39 = 123,999.66 : x
  2. Step 2: Convert to fraction form
    257,106.06/385,818.39 = 123,999.66/x
  3. Step 3: Cross multiply
    257,106.06x = 385,818.39 × 123,999.66
  4. Step 4: Simplify right side
    257,106.06x = 47,841,349,181.75
  5. Step 5: Solve for x
    x = 47,841,349,181.75/257,106.06
  6. Step 6: Final answer
    x = 186,076.32

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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.