Home / 149,023.80-223,047-81,452.32

Finding the Fourth Proportional to 149,023.80, 223,047 and 81,452.32

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Solution

The fourth proportional to 149,023.80, 223,047 and 81,452.32 is: 121,911.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,023.80 : 223,047 = 81,452.32 : x
  2. Step 2: Convert to fraction form
    149,023.80/223,047 = 81,452.32/x
  3. Step 3: Cross multiply
    149,023.80x = 223,047 × 81,452.32
  4. Step 4: Simplify right side
    149,023.80x = 18,167,695,061.42
  5. Step 5: Solve for x
    x = 18,167,695,061.42/149,023.80
  6. Step 6: Final answer
    x = 121,911.37

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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.