Home / 121,376.27-182,365.56-78,708.85

Finding the Fourth Proportional to 121,376.27, 182,365.56 and 78,708.85

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Solution

The fourth proportional to 121,376.27, 182,365.56 and 78,708.85 is: 118,258.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,376.27 : 182,365.56 = 78,708.85 : x
  2. Step 2: Convert to fraction form
    121,376.27/182,365.56 = 78,708.85/x
  3. Step 3: Cross multiply
    121,376.27x = 182,365.56 × 78,708.85
  4. Step 4: Simplify right side
    121,376.27x = 14,353,783,051.29
  5. Step 5: Solve for x
    x = 14,353,783,051.29/121,376.27
  6. Step 6: Final answer
    x = 118,258.56

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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.