Home / 105,661.73-145,816.80-57,915.07

Finding the Fourth Proportional to 105,661.73, 145,816.80 and 57,915.07

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Solution

The fourth proportional to 105,661.73, 145,816.80 and 57,915.07 is: 79,924.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,661.73 : 145,816.80 = 57,915.07 : x
  2. Step 2: Convert to fraction form
    105,661.73/145,816.80 = 57,915.07/x
  3. Step 3: Cross multiply
    105,661.73x = 145,816.80 × 57,915.07
  4. Step 4: Simplify right side
    105,661.73x = 8,444,989,450.09
  5. Step 5: Solve for x
    x = 8,444,989,450.09/105,661.73
  6. Step 6: Final answer
    x = 79,924.77

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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.