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Finding the Fourth Proportional to 145,610.64, 218,415.80 and 45,779.56

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Solution

The fourth proportional to 145,610.64, 218,415.80 and 45,779.56 is: 68,669.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,610.64 : 218,415.80 = 45,779.56 : x
  2. Step 2: Convert to fraction form
    145,610.64/218,415.80 = 45,779.56/x
  3. Step 3: Cross multiply
    145,610.64x = 218,415.80 × 45,779.56
  4. Step 4: Simplify right side
    145,610.64x = 9,998,979,221.05
  5. Step 5: Solve for x
    x = 9,998,979,221.05/145,610.64
  6. Step 6: Final answer
    x = 68,669.29

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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.