Home / 98,577.30-135,606.22-86,423.05

Finding the Fourth Proportional to 98,577.30, 135,606.22 and 86,423.05

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Solution

The fourth proportional to 98,577.30, 135,606.22 and 86,423.05 is: 118,886.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,577.30 : 135,606.22 = 86,423.05 : x
  2. Step 2: Convert to fraction form
    98,577.30/135,606.22 = 86,423.05/x
  3. Step 3: Cross multiply
    98,577.30x = 135,606.22 × 86,423.05
  4. Step 4: Simplify right side
    98,577.30x = 11,719,503,131.37
  5. Step 5: Solve for x
    x = 11,719,503,131.37/98,577.30
  6. Step 6: Final answer
    x = 118,886.43

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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.