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Finding the Fourth Proportional to 145,608.64, 218,412.80 and 45,777.56

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Solution

The fourth proportional to 145,608.64, 218,412.80 and 45,777.56 is: 68,666.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,608.64 : 218,412.80 = 45,777.56 : x
  2. Step 2: Convert to fraction form
    145,608.64/218,412.80 = 45,777.56/x
  3. Step 3: Cross multiply
    145,608.64x = 218,412.80 × 45,777.56
  4. Step 4: Simplify right side
    145,608.64x = 9,998,404,164.98
  5. Step 5: Solve for x
    x = 9,998,404,164.98/145,608.64
  6. Step 6: Final answer
    x = 68,666.28

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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.