Home / 257,076.35-385,610.40-70,087.85

Finding the Fourth Proportional to 257,076.35, 385,610.40 and 70,087.85

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Solution

The fourth proportional to 257,076.35, 385,610.40 and 70,087.85 is: 105,130.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,076.35 : 385,610.40 = 70,087.85 : x
  2. Step 2: Convert to fraction form
    257,076.35/385,610.40 = 70,087.85/x
  3. Step 3: Cross multiply
    257,076.35x = 385,610.40 × 70,087.85
  4. Step 4: Simplify right side
    257,076.35x = 27,026,601,945.59
  5. Step 5: Solve for x
    x = 27,026,601,945.59/257,076.35
  6. Step 6: Final answer
    x = 105,130.64

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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.