Home / 135,179.04-186,621.60-81,477.12

Finding the Fourth Proportional to 135,179.04, 186,621.60 and 81,477.12

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Solution

The fourth proportional to 135,179.04, 186,621.60 and 81,477.12 is: 112,483.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,179.04 : 186,621.60 = 81,477.12 : x
  2. Step 2: Convert to fraction form
    135,179.04/186,621.60 = 81,477.12/x
  3. Step 3: Cross multiply
    135,179.04x = 186,621.60 × 81,477.12
  4. Step 4: Simplify right side
    135,179.04x = 15,205,390,497.79
  5. Step 5: Solve for x
    x = 15,205,390,497.79/135,179.04
  6. Step 6: Final answer
    x = 112,483.34

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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.