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Finding the Fourth Proportional to 159,810.45, 220,530.90 and 91,779.45

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Solution

The fourth proportional to 159,810.45, 220,530.90 and 91,779.45 is: 126,651.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,810.45 : 220,530.90 = 91,779.45 : x
  2. Step 2: Convert to fraction form
    159,810.45/220,530.90 = 91,779.45/x
  3. Step 3: Cross multiply
    159,810.45x = 220,530.90 × 91,779.45
  4. Step 4: Simplify right side
    159,810.45x = 20,240,204,710.01
  5. Step 5: Solve for x
    x = 20,240,204,710.01/159,810.45
  6. Step 6: Final answer
    x = 126,651.32

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1.5x scale

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.