Home / 120,465.13-180,699.14-57,291.35

Finding the Fourth Proportional to 120,465.13, 180,699.14 and 57,291.35

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Solution

The fourth proportional to 120,465.13, 180,699.14 and 57,291.35 is: 85,937.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,465.13 : 180,699.14 = 57,291.35 : x
  2. Step 2: Convert to fraction form
    120,465.13/180,699.14 = 57,291.35/x
  3. Step 3: Cross multiply
    120,465.13x = 180,699.14 × 57,291.35
  4. Step 4: Simplify right side
    120,465.13x = 10,352,497,674.44
  5. Step 5: Solve for x
    x = 10,352,497,674.44/120,465.13
  6. Step 6: Final answer
    x = 85,937.71

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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.