Home / 288,069.24-431,965.54-136,139.88

Finding the Fourth Proportional to 288,069.24, 431,965.54 and 136,139.88

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Solution

The fourth proportional to 288,069.24, 431,965.54 and 136,139.88 is: 204,144.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,069.24 : 431,965.54 = 136,139.88 : x
  2. Step 2: Convert to fraction form
    288,069.24/431,965.54 = 136,139.88/x
  3. Step 3: Cross multiply
    288,069.24x = 431,965.54 × 136,139.88
  4. Step 4: Simplify right side
    288,069.24x = 58,807,736,779.74
  5. Step 5: Solve for x
    x = 58,807,736,779.74/288,069.24
  6. Step 6: Final answer
    x = 204,144.45

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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.