Home / 98,004.95-135,288.12-66,216.91

Finding the Fourth Proportional to 98,004.95, 135,288.12 and 66,216.91

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Solution

The fourth proportional to 98,004.95, 135,288.12 and 66,216.91 is: 91,407.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,004.95 : 135,288.12 = 66,216.91 : x
  2. Step 2: Convert to fraction form
    98,004.95/135,288.12 = 66,216.91/x
  3. Step 3: Cross multiply
    98,004.95x = 135,288.12 × 66,216.91
  4. Step 4: Simplify right side
    98,004.95x = 8,958,361,429.87
  5. Step 5: Solve for x
    x = 8,958,361,429.87/98,004.95
  6. Step 6: Final answer
    x = 91,407.23

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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.