Home / 257,105.90-385,907.62-124,079.80

Finding the Fourth Proportional to 257,105.90, 385,907.62 and 124,079.80

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Solution

The fourth proportional to 257,105.90, 385,907.62 and 124,079.80 is: 186,239.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,105.90 : 385,907.62 = 124,079.80 : x
  2. Step 2: Convert to fraction form
    257,105.90/385,907.62 = 124,079.80/x
  3. Step 3: Cross multiply
    257,105.90x = 385,907.62 × 124,079.80
  4. Step 4: Simplify right side
    257,105.90x = 47,883,340,308.08
  5. Step 5: Solve for x
    x = 47,883,340,308.08/257,105.90
  6. Step 6: Final answer
    x = 186,239.76

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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.