Home / 121,779.10-168,049.87-66,587.41

Finding the Fourth Proportional to 121,779.10, 168,049.87 and 66,587.41

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Solution

The fourth proportional to 121,779.10, 168,049.87 and 66,587.41 is: 91,887.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,779.10 : 168,049.87 = 66,587.41 : x
  2. Step 2: Convert to fraction form
    121,779.10/168,049.87 = 66,587.41/x
  3. Step 3: Cross multiply
    121,779.10x = 168,049.87 × 66,587.41
  4. Step 4: Simplify right side
    121,779.10x = 11,190,005,594.14
  5. Step 5: Solve for x
    x = 11,190,005,594.14/121,779.10
  6. Step 6: Final answer
    x = 91,887.73

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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.