Home / 105,322.75-145,348.56-57,578.65

Finding the Fourth Proportional to 105,322.75, 145,348.56 and 57,578.65

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Solution

The fourth proportional to 105,322.75, 145,348.56 and 57,578.65 is: 79,460.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,322.75 : 145,348.56 = 57,578.65 : x
  2. Step 2: Convert to fraction form
    105,322.75/145,348.56 = 57,578.65/x
  3. Step 3: Cross multiply
    105,322.75x = 145,348.56 × 57,578.65
  4. Step 4: Simplify right side
    105,322.75x = 8,368,973,864.24
  5. Step 5: Solve for x
    x = 8,368,973,864.24/105,322.75
  6. Step 6: Final answer
    x = 79,460.27

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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.