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Finding the Fourth Proportional to 260,101.65, 390,152.46 and 73,113.15

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Solution

The fourth proportional to 260,101.65, 390,152.46 and 73,113.15 is: 109,669.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,101.65 : 390,152.46 = 73,113.15 : x
  2. Step 2: Convert to fraction form
    260,101.65/390,152.46 = 73,113.15/x
  3. Step 3: Cross multiply
    260,101.65x = 390,152.46 × 73,113.15
  4. Step 4: Simplify right side
    260,101.65x = 28,525,275,330.85
  5. Step 5: Solve for x
    x = 28,525,275,330.85/260,101.65
  6. Step 6: Final answer
    x = 109,669.72

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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.