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Finding the Fourth Proportional to 131,699.49, 181,745.30 and 71,270.14

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Solution

The fourth proportional to 131,699.49, 181,745.30 and 71,270.14 is: 98,352.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,699.49 : 181,745.30 = 71,270.14 : x
  2. Step 2: Convert to fraction form
    131,699.49/181,745.30 = 71,270.14/x
  3. Step 3: Cross multiply
    131,699.49x = 181,745.30 × 71,270.14
  4. Step 4: Simplify right side
    131,699.49x = 12,953,012,975.34
  5. Step 5: Solve for x
    x = 12,953,012,975.34/131,699.49
  6. Step 6: Final answer
    x = 98,352.80

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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.