Home / 218,789.51-301,929.39-118,187.51

Finding the Fourth Proportional to 218,789.51, 301,929.39 and 118,187.51

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Solution

The fourth proportional to 218,789.51, 301,929.39 and 118,187.51 is: 163,098.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,789.51 : 301,929.39 = 118,187.51 : x
  2. Step 2: Convert to fraction form
    218,789.51/301,929.39 = 118,187.51/x
  3. Step 3: Cross multiply
    218,789.51x = 301,929.39 × 118,187.51
  4. Step 4: Simplify right side
    218,789.51x = 35,684,281,290.27
  5. Step 5: Solve for x
    x = 35,684,281,290.27/218,789.51
  6. Step 6: Final answer
    x = 163,098.69

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1.5x scale

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.