Home / 105,828.80-158,711.52-42,628.64

Finding the Fourth Proportional to 105,828.80, 158,711.52 and 42,628.64

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Solution

The fourth proportional to 105,828.80, 158,711.52 and 42,628.64 is: 63,930.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,828.80 : 158,711.52 = 42,628.64 : x
  2. Step 2: Convert to fraction form
    105,828.80/158,711.52 = 42,628.64/x
  3. Step 3: Cross multiply
    105,828.80x = 158,711.52 × 42,628.64
  4. Step 4: Simplify right side
    105,828.80x = 6,765,656,249.93
  5. Step 5: Solve for x
    x = 6,765,656,249.93/105,828.80
  6. Step 6: Final answer
    x = 63,930.20

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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.