Home / 102,021.32-140,787.60-56,698.50

Finding the Fourth Proportional to 102,021.32, 140,787.60 and 56,698.50

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Solution

The fourth proportional to 102,021.32, 140,787.60 and 56,698.50 is: 78,242.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,021.32 : 140,787.60 = 56,698.50 : x
  2. Step 2: Convert to fraction form
    102,021.32/140,787.60 = 56,698.50/x
  3. Step 3: Cross multiply
    102,021.32x = 140,787.60 × 56,698.50
  4. Step 4: Simplify right side
    102,021.32x = 7,982,445,738.60
  5. Step 5: Solve for x
    x = 7,982,445,738.60/102,021.32
  6. Step 6: Final answer
    x = 78,242.92

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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.