Home / 131,784.81-181,862.73-71,355.51

Finding the Fourth Proportional to 131,784.81, 181,862.73 and 71,355.51

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Solution

The fourth proportional to 131,784.81, 181,862.73 and 71,355.51 is: 98,470.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,784.81 : 181,862.73 = 71,355.51 : x
  2. Step 2: Convert to fraction form
    131,784.81/181,862.73 = 71,355.51/x
  3. Step 3: Cross multiply
    131,784.81x = 181,862.73 × 71,355.51
  4. Step 4: Simplify right side
    131,784.81x = 12,976,907,849.14
  5. Step 5: Solve for x
    x = 12,976,907,849.14/131,784.81
  6. Step 6: Final answer
    x = 98,470.44

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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.