Home / 135,908.10-187,559.40-75,478.98

Finding the Fourth Proportional to 135,908.10, 187,559.40 and 75,478.98

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Solution

The fourth proportional to 135,908.10, 187,559.40 and 75,478.98 is: 104,164.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,908.10 : 187,559.40 = 75,478.98 : x
  2. Step 2: Convert to fraction form
    135,908.10/187,559.40 = 75,478.98/x
  3. Step 3: Cross multiply
    135,908.10x = 187,559.40 × 75,478.98
  4. Step 4: Simplify right side
    135,908.10x = 14,156,792,201.41
  5. Step 5: Solve for x
    x = 14,156,792,201.41/135,908.10
  6. Step 6: Final answer
    x = 104,164.45

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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.