Home / 251,055.38-346,456-137,878.12

Finding the Fourth Proportional to 251,055.38, 346,456 and 137,878.12

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Solution

The fourth proportional to 251,055.38, 346,456 and 137,878.12 is: 190,271.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,055.38 : 346,456 = 137,878.12 : x
  2. Step 2: Convert to fraction form
    251,055.38/346,456 = 137,878.12/x
  3. Step 3: Cross multiply
    251,055.38x = 346,456 × 137,878.12
  4. Step 4: Simplify right side
    251,055.38x = 47,768,701,942.72
  5. Step 5: Solve for x
    x = 47,768,701,942.72/251,055.38
  6. Step 6: Final answer
    x = 190,271.57

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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.