Home / 141,905.21-212,742.39-53,108.96

Finding the Fourth Proportional to 141,905.21, 212,742.39 and 53,108.96

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Solution

The fourth proportional to 141,905.21, 212,742.39 and 53,108.96 is: 79,620.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,905.21 : 212,742.39 = 53,108.96 : x
  2. Step 2: Convert to fraction form
    141,905.21/212,742.39 = 53,108.96/x
  3. Step 3: Cross multiply
    141,905.21x = 212,742.39 × 53,108.96
  4. Step 4: Simplify right side
    141,905.21x = 11,298,527,080.81
  5. Step 5: Solve for x
    x = 11,298,527,080.81/141,905.21
  6. Step 6: Final answer
    x = 79,620.24

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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.