Home / 105,486.69-145,571.79-57,743.06

Finding the Fourth Proportional to 105,486.69, 145,571.79 and 57,743.06

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Solution

The fourth proportional to 105,486.69, 145,571.79 and 57,743.06 is: 79,685.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,486.69 : 145,571.79 = 57,743.06 : x
  2. Step 2: Convert to fraction form
    105,486.69/145,571.79 = 57,743.06/x
  3. Step 3: Cross multiply
    105,486.69x = 145,571.79 × 57,743.06
  4. Step 4: Simplify right side
    105,486.69x = 8,405,759,876.42
  5. Step 5: Solve for x
    x = 8,405,759,876.42/105,486.69
  6. Step 6: Final answer
    x = 79,685.50

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1.5x scale

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.