Home / 131,830.37-181,937.07-74,480.21

Finding the Fourth Proportional to 131,830.37, 181,937.07 and 74,480.21

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Solution

The fourth proportional to 131,830.37, 181,937.07 and 74,480.21 is: 102,788.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,830.37 : 181,937.07 = 74,480.21 : x
  2. Step 2: Convert to fraction form
    131,830.37/181,937.07 = 74,480.21/x
  3. Step 3: Cross multiply
    131,830.37x = 181,937.07 × 74,480.21
  4. Step 4: Simplify right side
    131,830.37x = 13,550,710,270.70
  5. Step 5: Solve for x
    x = 13,550,710,270.70/131,830.37
  6. Step 6: Final answer
    x = 102,788.99

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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.