Home / 129,643.04-178,907.38-73,056.44

Finding the Fourth Proportional to 129,643.04, 178,907.38 and 73,056.44

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Solution

The fourth proportional to 129,643.04, 178,907.38 and 73,056.44 is: 100,817.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,643.04 : 178,907.38 = 73,056.44 : x
  2. Step 2: Convert to fraction form
    129,643.04/178,907.38 = 73,056.44/x
  3. Step 3: Cross multiply
    129,643.04x = 178,907.38 × 73,056.44
  4. Step 4: Simplify right side
    129,643.04x = 13,070,336,537.15
  5. Step 5: Solve for x
    x = 13,070,336,537.15/129,643.04
  6. Step 6: Final answer
    x = 100,817.88

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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.