Home / 72,130.05-108,195.62-19,539.45

Finding the Fourth Proportional to 72,130.05, 108,195.62 and 19,539.45

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Solution

The fourth proportional to 72,130.05, 108,195.62 and 19,539.45 is: 29,309.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,130.05 : 108,195.62 = 19,539.45 : x
  2. Step 2: Convert to fraction form
    72,130.05/108,195.62 = 19,539.45/x
  3. Step 3: Cross multiply
    72,130.05x = 108,195.62 × 19,539.45
  4. Step 4: Simplify right side
    72,130.05x = 2,114,082,809.51
  5. Step 5: Solve for x
    x = 2,114,082,809.51/72,130.05
  6. Step 6: Final answer
    x = 29,309.32

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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.