Home / 136,968.48-189,016.11-76,539.18

Finding the Fourth Proportional to 136,968.48, 189,016.11 and 76,539.18

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Solution

The fourth proportional to 136,968.48, 189,016.11 and 76,539.18 is: 105,623.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,968.48 : 189,016.11 = 76,539.18 : x
  2. Step 2: Convert to fraction form
    136,968.48/189,016.11 = 76,539.18/x
  3. Step 3: Cross multiply
    136,968.48x = 189,016.11 × 76,539.18
  4. Step 4: Simplify right side
    136,968.48x = 14,467,138,066.19
  5. Step 5: Solve for x
    x = 14,467,138,066.19/136,968.48
  6. Step 6: Final answer
    x = 105,623.85

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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.