Home / 102,021.69-140,787.18-56,698.55

Finding the Fourth Proportional to 102,021.69, 140,787.18 and 56,698.55

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Solution

The fourth proportional to 102,021.69, 140,787.18 and 56,698.55 is: 78,242.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,021.69 : 140,787.18 = 56,698.55 : x
  2. Step 2: Convert to fraction form
    102,021.69/140,787.18 = 56,698.55/x
  3. Step 3: Cross multiply
    102,021.69x = 140,787.18 × 56,698.55
  4. Step 4: Simplify right side
    102,021.69x = 7,982,428,260.65
  5. Step 5: Solve for x
    x = 7,982,428,260.65/102,021.69
  6. Step 6: Final answer
    x = 78,242.46

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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.