Home / 105,439.03-145,505.70-57,692.36

Finding the Fourth Proportional to 105,439.03, 145,505.70 and 57,692.36

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Solution

The fourth proportional to 105,439.03, 145,505.70 and 57,692.36 is: 79,615.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,439.03 : 145,505.70 = 57,692.36 : x
  2. Step 2: Convert to fraction form
    105,439.03/145,505.70 = 57,692.36/x
  3. Step 3: Cross multiply
    105,439.03x = 145,505.70 × 57,692.36
  4. Step 4: Simplify right side
    105,439.03x = 8,394,567,590.22
  5. Step 5: Solve for x
    x = 8,394,567,590.22/105,439.03
  6. Step 6: Final answer
    x = 79,615.37

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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.