Home / 136,990.58-189,045.83-76,563.77

Finding the Fourth Proportional to 136,990.58, 189,045.83 and 76,563.77

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Solution

The fourth proportional to 136,990.58, 189,045.83 and 76,563.77 is: 105,657.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,990.58 : 189,045.83 = 76,563.77 : x
  2. Step 2: Convert to fraction form
    136,990.58/189,045.83 = 76,563.77/x
  3. Step 3: Cross multiply
    136,990.58x = 189,045.83 × 76,563.77
  4. Step 4: Simplify right side
    136,990.58x = 14,474,061,447.58
  5. Step 5: Solve for x
    x = 14,474,061,447.58/136,990.58
  6. Step 6: Final answer
    x = 105,657.35

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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.