Home / 137,186.28-189,317.92-76,756.92

Finding the Fourth Proportional to 137,186.28, 189,317.92 and 76,756.92

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Solution

The fourth proportional to 137,186.28, 189,317.92 and 76,756.92 is: 105,925.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,186.28 : 189,317.92 = 76,756.92 : x
  2. Step 2: Convert to fraction form
    137,186.28/189,317.92 = 76,756.92/x
  3. Step 3: Cross multiply
    137,186.28x = 189,317.92 × 76,756.92
  4. Step 4: Simplify right side
    137,186.28x = 14,531,460,440.01
  5. Step 5: Solve for x
    x = 14,531,460,440.01/137,186.28
  6. Step 6: Final answer
    x = 105,925.03

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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.