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Finding the Fourth Proportional to 145,891.80, 218,750.10 and 57,039.36

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Solution

The fourth proportional to 145,891.80, 218,750.10 and 57,039.36 is: 85,524.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,891.80 : 218,750.10 = 57,039.36 : x
  2. Step 2: Convert to fraction form
    145,891.80/218,750.10 = 57,039.36/x
  3. Step 3: Cross multiply
    145,891.80x = 218,750.10 × 57,039.36
  4. Step 4: Simplify right side
    145,891.80x = 12,477,365,703.94
  5. Step 5: Solve for x
    x = 12,477,365,703.94/145,891.80
  6. Step 6: Final answer
    x = 85,524.79

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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.