Home / 141,905.64-212,617.58-85,627.49

Finding the Fourth Proportional to 141,905.64, 212,617.58 and 85,627.49

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Solution

The fourth proportional to 141,905.64, 212,617.58 and 85,627.49 is: 128,295.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,905.64 : 212,617.58 = 85,627.49 : x
  2. Step 2: Convert to fraction form
    141,905.64/212,617.58 = 85,627.49/x
  3. Step 3: Cross multiply
    141,905.64x = 212,617.58 × 85,627.49
  4. Step 4: Simplify right side
    141,905.64x = 18,205,909,705.27
  5. Step 5: Solve for x
    x = 18,205,909,705.27/141,905.64
  6. Step 6: Final answer
    x = 128,295.89

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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.