Home / 136,989.14-189,044.36-76,559.72

Finding the Fourth Proportional to 136,989.14, 189,044.36 and 76,559.72

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Solution

The fourth proportional to 136,989.14, 189,044.36 and 76,559.72 is: 105,652.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,989.14 : 189,044.36 = 76,559.72 : x
  2. Step 2: Convert to fraction form
    136,989.14/189,044.36 = 76,559.72/x
  3. Step 3: Cross multiply
    136,989.14x = 189,044.36 × 76,559.72
  4. Step 4: Simplify right side
    136,989.14x = 14,473,183,269.18
  5. Step 5: Solve for x
    x = 14,473,183,269.18/136,989.14
  6. Step 6: Final answer
    x = 105,652.05

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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.