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Finding the Fourth Proportional to 131,798.52, 181,881.64 and 71,369.16

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Solution

The fourth proportional to 131,798.52, 181,881.64 and 71,369.16 is: 98,489.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,798.52 : 181,881.64 = 71,369.16 : x
  2. Step 2: Convert to fraction form
    131,798.52/181,881.64 = 71,369.16/x
  3. Step 3: Cross multiply
    131,798.52x = 181,881.64 × 71,369.16
  4. Step 4: Simplify right side
    131,798.52x = 12,980,739,866.22
  5. Step 5: Solve for x
    x = 12,980,739,866.22/131,798.52
  6. Step 6: Final answer
    x = 98,489.27

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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.