Home / 223,815.47-308,855.89-121,838.81

Finding the Fourth Proportional to 223,815.47, 308,855.89 and 121,838.81

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Solution

The fourth proportional to 223,815.47, 308,855.89 and 121,838.81 is: 168,132.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,815.47 : 308,855.89 = 121,838.81 : x
  2. Step 2: Convert to fraction form
    223,815.47/308,855.89 = 121,838.81/x
  3. Step 3: Cross multiply
    223,815.47x = 308,855.89 × 121,838.81
  4. Step 4: Simplify right side
    223,815.47x = 37,630,634,566.63
  5. Step 5: Solve for x
    x = 37,630,634,566.63/223,815.47
  6. Step 6: Final answer
    x = 168,132.41

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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.