Home / 103,784.54-143,172.95-99,760.86

Finding the Fourth Proportional to 103,784.54, 143,172.95 and 99,760.86

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Solution

The fourth proportional to 103,784.54, 143,172.95 and 99,760.86 is: 137,622.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,784.54 : 143,172.95 = 99,760.86 : x
  2. Step 2: Convert to fraction form
    103,784.54/143,172.95 = 99,760.86/x
  3. Step 3: Cross multiply
    103,784.54x = 143,172.95 × 99,760.86
  4. Step 4: Simplify right side
    103,784.54x = 14,283,056,620.74
  5. Step 5: Solve for x
    x = 14,283,056,620.74/103,784.54
  6. Step 6: Final answer
    x = 137,622.20

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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.