Home / 105,415.72-158,140.86-43,069.48

Finding the Fourth Proportional to 105,415.72, 158,140.86 and 43,069.48

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Solution

The fourth proportional to 105,415.72, 158,140.86 and 43,069.48 is: 64,611.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,415.72 : 158,140.86 = 43,069.48 : x
  2. Step 2: Convert to fraction form
    105,415.72/158,140.86 = 43,069.48/x
  3. Step 3: Cross multiply
    105,415.72x = 158,140.86 × 43,069.48
  4. Step 4: Simplify right side
    105,415.72x = 6,811,044,606.95
  5. Step 5: Solve for x
    x = 6,811,044,606.95/105,415.72
  6. Step 6: Final answer
    x = 64,611.28

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.