Home / 260,120.03-390,211.31-91,605.53

Finding the Fourth Proportional to 260,120.03, 390,211.31 and 91,605.53

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Solution

The fourth proportional to 260,120.03, 390,211.31 and 91,605.53 is: 137,419.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,120.03 : 390,211.31 = 91,605.53 : x
  2. Step 2: Convert to fraction form
    260,120.03/390,211.31 = 91,605.53/x
  3. Step 3: Cross multiply
    260,120.03x = 390,211.31 × 91,605.53
  4. Step 4: Simplify right side
    260,120.03x = 35,745,513,864.54
  5. Step 5: Solve for x
    x = 35,745,513,864.54/260,120.03
  6. Step 6: Final answer
    x = 137,419.31

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1.5x scale

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.