Home / 131,518.45-181,495.35-71,089.09

Finding the Fourth Proportional to 131,518.45, 181,495.35 and 71,089.09

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Solution

The fourth proportional to 131,518.45, 181,495.35 and 71,089.09 is: 98,102.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,518.45 : 181,495.35 = 71,089.09 : x
  2. Step 2: Convert to fraction form
    131,518.45/181,495.35 = 71,089.09/x
  3. Step 3: Cross multiply
    131,518.45x = 181,495.35 × 71,089.09
  4. Step 4: Simplify right side
    131,518.45x = 12,902,339,837.90
  5. Step 5: Solve for x
    x = 12,902,339,837.90/131,518.45
  6. Step 6: Final answer
    x = 98,102.89

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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.