Home / 131,480.21-181,458.67-74,130.58

Finding the Fourth Proportional to 131,480.21, 181,458.67 and 74,130.58

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Solution

The fourth proportional to 131,480.21, 181,458.67 and 74,130.58 is: 102,309.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,480.21 : 181,458.67 = 74,130.58 : x
  2. Step 2: Convert to fraction form
    131,480.21/181,458.67 = 74,130.58/x
  3. Step 3: Cross multiply
    131,480.21x = 181,458.67 × 74,130.58
  4. Step 4: Simplify right side
    131,480.21x = 13,451,636,743.31
  5. Step 5: Solve for x
    x = 13,451,636,743.31/131,480.21
  6. Step 6: Final answer
    x = 102,309.21

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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.