Home / 125,964.32-173,914.40-78,288.80

Finding the Fourth Proportional to 125,964.32, 173,914.40 and 78,288.80

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Solution

The fourth proportional to 125,964.32, 173,914.40 and 78,288.80 is: 108,090.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,964.32 : 173,914.40 = 78,288.80 : x
  2. Step 2: Convert to fraction form
    125,964.32/173,914.40 = 78,288.80/x
  3. Step 3: Cross multiply
    125,964.32x = 173,914.40 × 78,288.80
  4. Step 4: Simplify right side
    125,964.32x = 13,615,549,678.72
  5. Step 5: Solve for x
    x = 13,615,549,678.72/125,964.32
  6. Step 6: Final answer
    x = 108,090.53

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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.