Home / 98,126.40-135,415.08-55,685.64

Finding the Fourth Proportional to 98,126.40, 135,415.08 and 55,685.64

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Solution

The fourth proportional to 98,126.40, 135,415.08 and 55,685.64 is: 76,846.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,126.40 : 135,415.08 = 55,685.64 : x
  2. Step 2: Convert to fraction form
    98,126.40/135,415.08 = 55,685.64/x
  3. Step 3: Cross multiply
    98,126.40x = 135,415.08 × 55,685.64
  4. Step 4: Simplify right side
    98,126.40x = 7,540,675,395.45
  5. Step 5: Solve for x
    x = 7,540,675,395.45/98,126.40
  6. Step 6: Final answer
    x = 76,846.55

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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.