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Finding the Fourth Proportional to 154,641.63, 231,926.25 and 87,202.80

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Solution

The fourth proportional to 154,641.63, 231,926.25 and 87,202.80 is: 130,783.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,641.63 : 231,926.25 = 87,202.80 : x
  2. Step 2: Convert to fraction form
    154,641.63/231,926.25 = 87,202.80/x
  3. Step 3: Cross multiply
    154,641.63x = 231,926.25 × 87,202.80
  4. Step 4: Simplify right side
    154,641.63x = 20,224,618,393.50
  5. Step 5: Solve for x
    x = 20,224,618,393.50/154,641.63
  6. Step 6: Final answer
    x = 130,783.79

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1.5x scale

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.