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Finding the Fourth Proportional to 260,115.94, 390,173.94 and 73,127.44

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Solution

The fourth proportional to 260,115.94, 390,173.94 and 73,127.44 is: 109,691.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,115.94 : 390,173.94 = 73,127.44 : x
  2. Step 2: Convert to fraction form
    260,115.94/390,173.94 = 73,127.44/x
  3. Step 3: Cross multiply
    260,115.94x = 390,173.94 × 73,127.44
  4. Step 4: Simplify right side
    260,115.94x = 28,532,421,386.91
  5. Step 5: Solve for x
    x = 28,532,421,386.91/260,115.94
  6. Step 6: Final answer
    x = 109,691.17

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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.