Home / 260,130.66-390,196.14-73,142.16

Finding the Fourth Proportional to 260,130.66, 390,196.14 and 73,142.16

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Solution

The fourth proportional to 260,130.66, 390,196.14 and 73,142.16 is: 109,713.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,130.66 : 390,196.14 = 73,142.16 : x
  2. Step 2: Convert to fraction form
    260,130.66/390,196.14 = 73,142.16/x
  3. Step 3: Cross multiply
    260,130.66x = 390,196.14 × 73,142.16
  4. Step 4: Simplify right side
    260,130.66x = 28,539,786,765.74
  5. Step 5: Solve for x
    x = 28,539,786,765.74/260,130.66
  6. Step 6: Final answer
    x = 109,713.28

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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.