Home / 131,858.89-181,965.18-71,429.75

Finding the Fourth Proportional to 131,858.89, 181,965.18 and 71,429.75

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Solution

The fourth proportional to 131,858.89, 181,965.18 and 71,429.75 is: 98,573.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,858.89 : 181,965.18 = 71,429.75 : x
  2. Step 2: Convert to fraction form
    131,858.89/181,965.18 = 71,429.75/x
  3. Step 3: Cross multiply
    131,858.89x = 181,965.18 × 71,429.75
  4. Step 4: Simplify right side
    131,858.89x = 12,997,727,356.51
  5. Step 5: Solve for x
    x = 12,997,727,356.51/131,858.89
  6. Step 6: Final answer
    x = 98,573.01

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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.