Home / 134,994.48-186,294.34-78,405.84

Finding the Fourth Proportional to 134,994.48, 186,294.34 and 78,405.84

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Solution

The fourth proportional to 134,994.48, 186,294.34 and 78,405.84 is: 108,201.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,994.48 : 186,294.34 = 78,405.84 : x
  2. Step 2: Convert to fraction form
    134,994.48/186,294.34 = 78,405.84/x
  3. Step 3: Cross multiply
    134,994.48x = 186,294.34 × 78,405.84
  4. Step 4: Simplify right side
    134,994.48x = 14,606,564,214.95
  5. Step 5: Solve for x
    x = 14,606,564,214.95/134,994.48
  6. Step 6: Final answer
    x = 108,201.20

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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.