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Finding the Fourth Proportional to 100,779.71, 151,191.42 and 30,657.20

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Solution

The fourth proportional to 100,779.71, 151,191.42 and 30,657.20 is: 45,992.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,779.71 : 151,191.42 = 30,657.20 : x
  2. Step 2: Convert to fraction form
    100,779.71/151,191.42 = 30,657.20/x
  3. Step 3: Cross multiply
    100,779.71x = 151,191.42 × 30,657.20
  4. Step 4: Simplify right side
    100,779.71x = 4,635,104,845.27
  5. Step 5: Solve for x
    x = 4,635,104,845.27/100,779.71
  6. Step 6: Final answer
    x = 45,992.44

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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.