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Finding the Fourth Proportional to 137,161.37, 189,275.04 and 76,720.32

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Solution

The fourth proportional to 137,161.37, 189,275.04 and 76,720.32 is: 105,869.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,161.37 : 189,275.04 = 76,720.32 : x
  2. Step 2: Convert to fraction form
    137,161.37/189,275.04 = 76,720.32/x
  3. Step 3: Cross multiply
    137,161.37x = 189,275.04 × 76,720.32
  4. Step 4: Simplify right side
    137,161.37x = 14,521,241,636.81
  5. Step 5: Solve for x
    x = 14,521,241,636.81/137,161.37
  6. Step 6: Final answer
    x = 105,869.77

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.