Home / 260,122.12-390,214.43-91,607.63

Finding the Fourth Proportional to 260,122.12, 390,214.43 and 91,607.63

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Solution

The fourth proportional to 260,122.12, 390,214.43 and 91,607.63 is: 137,422.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,122.12 : 390,214.43 = 91,607.63 : x
  2. Step 2: Convert to fraction form
    260,122.12/390,214.43 = 91,607.63/x
  3. Step 3: Cross multiply
    260,122.12x = 390,214.43 × 91,607.63
  4. Step 4: Simplify right side
    260,122.12x = 35,746,617,058.52
  5. Step 5: Solve for x
    x = 35,746,617,058.52/260,122.12
  6. Step 6: Final answer
    x = 137,422.44

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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.