Home / 149,132.76-205,779.30-85,458.72

Finding the Fourth Proportional to 149,132.76, 205,779.30 and 85,458.72

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Solution

The fourth proportional to 149,132.76, 205,779.30 and 85,458.72 is: 117,919.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,132.76 : 205,779.30 = 85,458.72 : x
  2. Step 2: Convert to fraction form
    149,132.76/205,779.30 = 85,458.72/x
  3. Step 3: Cross multiply
    149,132.76x = 205,779.30 × 85,458.72
  4. Step 4: Simplify right side
    149,132.76x = 17,585,635,580.50
  5. Step 5: Solve for x
    x = 17,585,635,580.50/149,132.76
  6. Step 6: Final answer
    x = 117,919.33

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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.