Home / 136,968.61-189,035.48-78,824.16

Finding the Fourth Proportional to 136,968.61, 189,035.48 and 78,824.16

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Solution

The fourth proportional to 136,968.61, 189,035.48 and 78,824.16 is: 108,788.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,968.61 : 189,035.48 = 78,824.16 : x
  2. Step 2: Convert to fraction form
    136,968.61/189,035.48 = 78,824.16/x
  3. Step 3: Cross multiply
    136,968.61x = 189,035.48 × 78,824.16
  4. Step 4: Simplify right side
    136,968.61x = 14,900,562,921.20
  5. Step 5: Solve for x
    x = 14,900,562,921.20/136,968.61
  6. Step 6: Final answer
    x = 108,788.16

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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.