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Finding the Fourth Proportional to 131,291.76, 181,186.16 and 80,303.61

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Solution

The fourth proportional to 131,291.76, 181,186.16 and 80,303.61 is: 110,821.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,291.76 : 181,186.16 = 80,303.61 : x
  2. Step 2: Convert to fraction form
    131,291.76/181,186.16 = 80,303.61/x
  3. Step 3: Cross multiply
    131,291.76x = 181,186.16 × 80,303.61
  4. Step 4: Simplify right side
    131,291.76x = 14,549,902,328.52
  5. Step 5: Solve for x
    x = 14,549,902,328.52/131,291.76
  6. Step 6: Final answer
    x = 110,821.14

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.