Home / 134,914.32-186,203.64-78,358.50

Finding the Fourth Proportional to 134,914.32, 186,203.64 and 78,358.50

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Solution

The fourth proportional to 134,914.32, 186,203.64 and 78,358.50 is: 108,147.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,914.32 : 186,203.64 = 78,358.50 : x
  2. Step 2: Convert to fraction form
    134,914.32/186,203.64 = 78,358.50/x
  3. Step 3: Cross multiply
    134,914.32x = 186,203.64 × 78,358.50
  4. Step 4: Simplify right side
    134,914.32x = 14,590,637,924.94
  5. Step 5: Solve for x
    x = 14,590,637,924.94/134,914.32
  6. Step 6: Final answer
    x = 108,147.44

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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.