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Finding the Fourth Proportional to 131,756.69, 181,822.70 and 71,326.00

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Solution

The fourth proportional to 131,756.69, 181,822.70 and 71,326.00 is: 98,429.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,756.69 : 181,822.70 = 71,326.00 : x
  2. Step 2: Convert to fraction form
    131,756.69/181,822.70 = 71,326.00/x
  3. Step 3: Cross multiply
    131,756.69x = 181,822.70 × 71,326.00
  4. Step 4: Simplify right side
    131,756.69x = 12,968,686,305.79
  5. Step 5: Solve for x
    x = 12,968,686,305.79/131,756.69
  6. Step 6: Final answer
    x = 98,429.05

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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.