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Finding the Fourth Proportional to 134,638.70, 185,800.59 and 73,384.80

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Solution

The fourth proportional to 134,638.70, 185,800.59 and 73,384.80 is: 101,270.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,638.70 : 185,800.59 = 73,384.80 : x
  2. Step 2: Convert to fraction form
    134,638.70/185,800.59 = 73,384.80/x
  3. Step 3: Cross multiply
    134,638.70x = 185,800.59 × 73,384.80
  4. Step 4: Simplify right side
    134,638.70x = 13,634,939,137.03
  5. Step 5: Solve for x
    x = 13,634,939,137.03/134,638.70
  6. Step 6: Final answer
    x = 101,270.58

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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.