Home / 152,839.32-210,905.82-85,769.88

Finding the Fourth Proportional to 152,839.32, 210,905.82 and 85,769.88

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Solution

The fourth proportional to 152,839.32, 210,905.82 and 85,769.88 is: 118,355.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,839.32 : 210,905.82 = 85,769.88 : x
  2. Step 2: Convert to fraction form
    152,839.32/210,905.82 = 85,769.88/x
  3. Step 3: Cross multiply
    152,839.32x = 210,905.82 × 85,769.88
  4. Step 4: Simplify right side
    152,839.32x = 18,089,366,872.70
  5. Step 5: Solve for x
    x = 18,089,366,872.70/152,839.32
  6. Step 6: Final answer
    x = 118,355.45

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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.