Home / 88,137.43-121,637.19-49,903.72

Finding the Fourth Proportional to 88,137.43, 121,637.19 and 49,903.72

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Solution

The fourth proportional to 88,137.43, 121,637.19 and 49,903.72 is: 68,871.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,137.43 : 121,637.19 = 49,903.72 : x
  2. Step 2: Convert to fraction form
    88,137.43/121,637.19 = 49,903.72/x
  3. Step 3: Cross multiply
    88,137.43x = 121,637.19 × 49,903.72
  4. Step 4: Simplify right side
    88,137.43x = 6,070,147,873.68
  5. Step 5: Solve for x
    x = 6,070,147,873.68/88,137.43
  6. Step 6: Final answer
    x = 68,871.39

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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.