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Finding the Fourth Proportional to 131,658.69, 181,710.73 and 80,699.77

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Solution

The fourth proportional to 131,658.69, 181,710.73 and 80,699.77 is: 111,379.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,658.69 : 181,710.73 = 80,699.77 : x
  2. Step 2: Convert to fraction form
    131,658.69/181,710.73 = 80,699.77/x
  3. Step 3: Cross multiply
    131,658.69x = 181,710.73 × 80,699.77
  4. Step 4: Simplify right side
    131,658.69x = 14,664,014,445.55
  5. Step 5: Solve for x
    x = 14,664,014,445.55/131,658.69
  6. Step 6: Final answer
    x = 111,379.01

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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.