Home / 260,423.14-390,665.94-91,908.64

Finding the Fourth Proportional to 260,423.14, 390,665.94 and 91,908.64

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Solution

The fourth proportional to 260,423.14, 390,665.94 and 91,908.64 is: 137,873.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,423.14 : 390,665.94 = 91,908.64 : x
  2. Step 2: Convert to fraction form
    260,423.14/390,665.94 = 91,908.64/x
  3. Step 3: Cross multiply
    260,423.14x = 390,665.94 × 91,908.64
  4. Step 4: Simplify right side
    260,423.14x = 35,905,575,239.72
  5. Step 5: Solve for x
    x = 35,905,575,239.72/260,423.14
  6. Step 6: Final answer
    x = 137,873.98

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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.