Home / 105,263.40-145,261.78-57,515.73

Finding the Fourth Proportional to 105,263.40, 145,261.78 and 57,515.73

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Solution

The fourth proportional to 105,263.40, 145,261.78 and 57,515.73 is: 79,370.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,263.40 : 145,261.78 = 57,515.73 : x
  2. Step 2: Convert to fraction form
    105,263.40/145,261.78 = 57,515.73/x
  3. Step 3: Cross multiply
    105,263.40x = 145,261.78 × 57,515.73
  4. Step 4: Simplify right side
    105,263.40x = 8,354,837,317.80
  5. Step 5: Solve for x
    x = 8,354,837,317.80/105,263.40
  6. Step 6: Final answer
    x = 79,370.77

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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.