Home / 135,290.08-186,752.64-121,118.32

Finding the Fourth Proportional to 135,290.08, 186,752.64 and 121,118.32

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Solution

The fourth proportional to 135,290.08, 186,752.64 and 121,118.32 is: 167,190.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,290.08 : 186,752.64 = 121,118.32 : x
  2. Step 2: Convert to fraction form
    135,290.08/186,752.64 = 121,118.32/x
  3. Step 3: Cross multiply
    135,290.08x = 186,752.64 × 121,118.32
  4. Step 4: Simplify right side
    135,290.08x = 22,619,166,012.36
  5. Step 5: Solve for x
    x = 22,619,166,012.36/135,290.08
  6. Step 6: Final answer
    x = 167,190.13

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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.