Home / 134,905.68-186,179.88-78,325.68

Finding the Fourth Proportional to 134,905.68, 186,179.88 and 78,325.68

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Solution

The fourth proportional to 134,905.68, 186,179.88 and 78,325.68 is: 108,095.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,905.68 : 186,179.88 = 78,325.68 : x
  2. Step 2: Convert to fraction form
    134,905.68/186,179.88 = 78,325.68/x
  3. Step 3: Cross multiply
    134,905.68x = 186,179.88 × 78,325.68
  4. Step 4: Simplify right side
    134,905.68x = 14,582,665,703.32
  5. Step 5: Solve for x
    x = 14,582,665,703.32/134,905.68
  6. Step 6: Final answer
    x = 108,095.27

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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.