Home / 152,739.36-210,805.20-85,692.96

Finding the Fourth Proportional to 152,739.36, 210,805.20 and 85,692.96

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Solution

The fourth proportional to 152,739.36, 210,805.20 and 85,692.96 is: 118,270.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,739.36 : 210,805.20 = 85,692.96 : x
  2. Step 2: Convert to fraction form
    152,739.36/210,805.20 = 85,692.96/x
  3. Step 3: Cross multiply
    152,739.36x = 210,805.20 × 85,692.96
  4. Step 4: Simplify right side
    152,739.36x = 18,064,521,571.39
  5. Step 5: Solve for x
    x = 18,064,521,571.39/152,739.36
  6. Step 6: Final answer
    x = 118,270.25

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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.