Home / 260,118.03-390,208.31-91,603.53

Finding the Fourth Proportional to 260,118.03, 390,208.31 and 91,603.53

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Solution

The fourth proportional to 260,118.03, 390,208.31 and 91,603.53 is: 137,416.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,118.03 : 390,208.31 = 91,603.53 : x
  2. Step 2: Convert to fraction form
    260,118.03/390,208.31 = 91,603.53/x
  3. Step 3: Cross multiply
    260,118.03x = 390,208.31 × 91,603.53
  4. Step 4: Simplify right side
    260,118.03x = 35,744,458,774.46
  5. Step 5: Solve for x
    x = 35,744,458,774.46/260,118.03
  6. Step 6: Final answer
    x = 137,416.30

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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.