Home / 260,118.96-390,209.70-91,604.45

Finding the Fourth Proportional to 260,118.96, 390,209.70 and 91,604.45

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Solution

The fourth proportional to 260,118.96, 390,209.70 and 91,604.45 is: 137,417.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,118.96 : 390,209.70 = 91,604.45 : x
  2. Step 2: Convert to fraction form
    260,118.96/390,209.70 = 91,604.45/x
  3. Step 3: Cross multiply
    260,118.96x = 390,209.70 × 91,604.45
  4. Step 4: Simplify right side
    260,118.96x = 35,744,944,495.14
  5. Step 5: Solve for x
    x = 35,744,944,495.14/260,118.96
  6. Step 6: Final answer
    x = 137,417.68

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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.