Home / 154,112.60-212,671.16-86,129.86

Finding the Fourth Proportional to 154,112.60, 212,671.16 and 86,129.86

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Solution

The fourth proportional to 154,112.60, 212,671.16 and 86,129.86 is: 118,856.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,112.60 : 212,671.16 = 86,129.86 : x
  2. Step 2: Convert to fraction form
    154,112.60/212,671.16 = 86,129.86/x
  3. Step 3: Cross multiply
    154,112.60x = 212,671.16 × 86,129.86
  4. Step 4: Simplify right side
    154,112.60x = 18,317,337,236.84
  5. Step 5: Solve for x
    x = 18,317,337,236.84/154,112.60
  6. Step 6: Final answer
    x = 118,856.84

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.