Home / 98,130.08-135,419.12-55,103.59

Finding the Fourth Proportional to 98,130.08, 135,419.12 and 55,103.59

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Solution

The fourth proportional to 98,130.08, 135,419.12 and 55,103.59 is: 76,042.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,130.08 : 135,419.12 = 55,103.59 : x
  2. Step 2: Convert to fraction form
    98,130.08/135,419.12 = 55,103.59/x
  3. Step 3: Cross multiply
    98,130.08x = 135,419.12 × 55,103.59
  4. Step 4: Simplify right side
    98,130.08x = 7,462,078,989.55
  5. Step 5: Solve for x
    x = 7,462,078,989.55/98,130.08
  6. Step 6: Final answer
    x = 76,042.73

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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.