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Finding the Fourth Proportional to 141,673.70, 212,316.15 and 115,429.70

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Solution

The fourth proportional to 141,673.70, 212,316.15 and 115,429.70 is: 172,986.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,673.70 : 212,316.15 = 115,429.70 : x
  2. Step 2: Convert to fraction form
    141,673.70/212,316.15 = 115,429.70/x
  3. Step 3: Cross multiply
    141,673.70x = 212,316.15 × 115,429.70
  4. Step 4: Simplify right side
    141,673.70x = 24,507,589,499.66
  5. Step 5: Solve for x
    x = 24,507,589,499.66/141,673.70
  6. Step 6: Final answer
    x = 172,986.16

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1.5x scale

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.