Home / 145,716.22-218,421.18-66,765.52

Finding the Fourth Proportional to 145,716.22, 218,421.18 and 66,765.52

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Solution

The fourth proportional to 145,716.22, 218,421.18 and 66,765.52 is: 100,078.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,716.22 : 218,421.18 = 66,765.52 : x
  2. Step 2: Convert to fraction form
    145,716.22/218,421.18 = 66,765.52/x
  3. Step 3: Cross multiply
    145,716.22x = 218,421.18 × 66,765.52
  4. Step 4: Simplify right side
    145,716.22x = 14,583,003,661.71
  5. Step 5: Solve for x
    x = 14,583,003,661.71/145,716.22
  6. Step 6: Final answer
    x = 100,078.11

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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.