Home / 128,927.56-193,060.86-76,374.76

Finding the Fourth Proportional to 128,927.56, 193,060.86 and 76,374.76

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Solution

The fourth proportional to 128,927.56, 193,060.86 and 76,374.76 is: 114,366.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,927.56 : 193,060.86 = 76,374.76 : x
  2. Step 2: Convert to fraction form
    128,927.56/193,060.86 = 76,374.76/x
  3. Step 3: Cross multiply
    128,927.56x = 193,060.86 × 76,374.76
  4. Step 4: Simplify right side
    128,927.56x = 14,744,976,847.89
  5. Step 5: Solve for x
    x = 14,744,976,847.89/128,927.56
  6. Step 6: Final answer
    x = 114,366.37

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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.