Home / 131,638.58-181,661.03-71,209.03

Finding the Fourth Proportional to 131,638.58, 181,661.03 and 71,209.03

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Solution

The fourth proportional to 131,638.58, 181,661.03 and 71,209.03 is: 98,268.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,638.58 : 181,661.03 = 71,209.03 : x
  2. Step 2: Convert to fraction form
    131,638.58/181,661.03 = 71,209.03/x
  3. Step 3: Cross multiply
    131,638.58x = 181,661.03 × 71,209.03
  4. Step 4: Simplify right side
    131,638.58x = 12,935,905,379.06
  5. Step 5: Solve for x
    x = 12,935,905,379.06/131,638.58
  6. Step 6: Final answer
    x = 98,268.35

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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.