Home / 100,007.47-138,014.60-54,682.75

Finding the Fourth Proportional to 100,007.47, 138,014.60 and 54,682.75

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Solution

The fourth proportional to 100,007.47, 138,014.60 and 54,682.75 is: 75,464.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,007.47 : 138,014.60 = 54,682.75 : x
  2. Step 2: Convert to fraction form
    100,007.47/138,014.60 = 54,682.75/x
  3. Step 3: Cross multiply
    100,007.47x = 138,014.60 × 54,682.75
  4. Step 4: Simplify right side
    100,007.47x = 7,547,017,868.15
  5. Step 5: Solve for x
    x = 7,547,017,868.15/100,007.47
  6. Step 6: Final answer
    x = 75,464.54

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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.