Home / 76,188.64-105,135.06-42,194.68

Finding the Fourth Proportional to 76,188.64, 105,135.06 and 42,194.68

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Solution

The fourth proportional to 76,188.64, 105,135.06 and 42,194.68 is: 58,225.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,188.64 : 105,135.06 = 42,194.68 : x
  2. Step 2: Convert to fraction form
    76,188.64/105,135.06 = 42,194.68/x
  3. Step 3: Cross multiply
    76,188.64x = 105,135.06 × 42,194.68
  4. Step 4: Simplify right side
    76,188.64x = 4,436,140,213.48
  5. Step 5: Solve for x
    x = 4,436,140,213.48/76,188.64
  6. Step 6: Final answer
    x = 58,225.74

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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.