Home / 260,111.44-390,167.36-70,571.80

Finding the Fourth Proportional to 260,111.44, 390,167.36 and 70,571.80

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Solution

The fourth proportional to 260,111.44, 390,167.36 and 70,571.80 is: 105,857.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,111.44 : 390,167.36 = 70,571.80 : x
  2. Step 2: Convert to fraction form
    260,111.44/390,167.36 = 70,571.80/x
  3. Step 3: Cross multiply
    260,111.44x = 390,167.36 × 70,571.80
  4. Step 4: Simplify right side
    260,111.44x = 27,534,812,000.11
  5. Step 5: Solve for x
    x = 27,534,812,000.11/260,111.44
  6. Step 6: Final answer
    x = 105,857.75

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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.