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Finding the Fourth Proportional to 260,104.64, 390,156.95 and 73,116.14

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Solution

The fourth proportional to 260,104.64, 390,156.95 and 73,116.14 is: 109,674.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,104.64 : 390,156.95 = 73,116.14 : x
  2. Step 2: Convert to fraction form
    260,104.64/390,156.95 = 73,116.14/x
  3. Step 3: Cross multiply
    260,104.64x = 390,156.95 × 73,116.14
  4. Step 4: Simplify right side
    260,104.64x = 28,526,768,410.18
  5. Step 5: Solve for x
    x = 28,526,768,410.18/260,104.64
  6. Step 6: Final answer
    x = 109,674.20

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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.