Home / 141,318.36-212,066.64-81,423.72

Finding the Fourth Proportional to 141,318.36, 212,066.64 and 81,423.72

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Solution

The fourth proportional to 141,318.36, 212,066.64 and 81,423.72 is: 122,186.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,318.36 : 212,066.64 = 81,423.72 : x
  2. Step 2: Convert to fraction form
    141,318.36/212,066.64 = 81,423.72/x
  3. Step 3: Cross multiply
    141,318.36x = 212,066.64 × 81,423.72
  4. Step 4: Simplify right side
    141,318.36x = 17,267,254,716.70
  5. Step 5: Solve for x
    x = 17,267,254,716.70/141,318.36
  6. Step 6: Final answer
    x = 122,186.92

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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.