Home / 102,109.15-140,902.46-56,787.22

Finding the Fourth Proportional to 102,109.15, 140,902.46 and 56,787.22

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Solution

The fourth proportional to 102,109.15, 140,902.46 and 56,787.22 is: 78,361.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,109.15 : 140,902.46 = 56,787.22 : x
  2. Step 2: Convert to fraction form
    102,109.15/140,902.46 = 56,787.22/x
  3. Step 3: Cross multiply
    102,109.15x = 140,902.46 × 56,787.22
  4. Step 4: Simplify right side
    102,109.15x = 8,001,458,571.32
  5. Step 5: Solve for x
    x = 8,001,458,571.32/102,109.15
  6. Step 6: Final answer
    x = 78,361.82

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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.