Home / 260,112.53-390,194.78-70,575.90

Finding the Fourth Proportional to 260,112.53, 390,194.78 and 70,575.90

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Solution

The fourth proportional to 260,112.53, 390,194.78 and 70,575.90 is: 105,870.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,112.53 : 390,194.78 = 70,575.90 : x
  2. Step 2: Convert to fraction form
    260,112.53/390,194.78 = 70,575.90/x
  3. Step 3: Cross multiply
    260,112.53x = 390,194.78 × 70,575.90
  4. Step 4: Simplify right side
    260,112.53x = 27,538,347,420.92
  5. Step 5: Solve for x
    x = 27,538,347,420.92/260,112.53
  6. Step 6: Final answer
    x = 105,870.90

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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.