Home / 131,881.73-181,986.01-77,428.16

Finding the Fourth Proportional to 131,881.73, 181,986.01 and 77,428.16

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Solution

The fourth proportional to 131,881.73, 181,986.01 and 77,428.16 is: 106,844.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,881.73 : 181,986.01 = 77,428.16 : x
  2. Step 2: Convert to fraction form
    131,881.73/181,986.01 = 77,428.16/x
  3. Step 3: Cross multiply
    131,881.73x = 181,986.01 × 77,428.16
  4. Step 4: Simplify right side
    131,881.73x = 14,090,841,900.04
  5. Step 5: Solve for x
    x = 14,090,841,900.04/131,881.73
  6. Step 6: Final answer
    x = 106,844.53

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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.