Home / 121,688.80-182,390.64-55,051.36

Finding the Fourth Proportional to 121,688.80, 182,390.64 and 55,051.36

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Solution

The fourth proportional to 121,688.80, 182,390.64 and 55,051.36 is: 82,512.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,688.80 : 182,390.64 = 55,051.36 : x
  2. Step 2: Convert to fraction form
    121,688.80/182,390.64 = 55,051.36/x
  3. Step 3: Cross multiply
    121,688.80x = 182,390.64 × 55,051.36
  4. Step 4: Simplify right side
    121,688.80x = 10,040,852,783.27
  5. Step 5: Solve for x
    x = 10,040,852,783.27/121,688.80
  6. Step 6: Final answer
    x = 82,512.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.