Home / 131,187.84-181,085.96-77,473.07

Finding the Fourth Proportional to 131,187.84, 181,085.96 and 77,473.07

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Solution

The fourth proportional to 131,187.84, 181,085.96 and 77,473.07 is: 106,940.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,187.84 : 181,085.96 = 77,473.07 : x
  2. Step 2: Convert to fraction form
    131,187.84/181,085.96 = 77,473.07/x
  3. Step 3: Cross multiply
    131,187.84x = 181,085.96 × 77,473.07
  4. Step 4: Simplify right side
    131,187.84x = 14,029,285,901.49
  5. Step 5: Solve for x
    x = 14,029,285,901.49/131,187.84
  6. Step 6: Final answer
    x = 106,940.44

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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.