Home / 105,519.56-145,616.98-57,772.89

Finding the Fourth Proportional to 105,519.56, 145,616.98 and 57,772.89

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Solution

The fourth proportional to 105,519.56, 145,616.98 and 57,772.89 is: 79,726.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,519.56 : 145,616.98 = 57,772.89 : x
  2. Step 2: Convert to fraction form
    105,519.56/145,616.98 = 57,772.89/x
  3. Step 3: Cross multiply
    105,519.56x = 145,616.98 × 57,772.89
  4. Step 4: Simplify right side
    105,519.56x = 8,412,713,767.67
  5. Step 5: Solve for x
    x = 8,412,713,767.67/105,519.56
  6. Step 6: Final answer
    x = 79,726.58

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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.