Home / 142,590.88-213,820.32-80,261.36

Finding the Fourth Proportional to 142,590.88, 213,820.32 and 80,261.36

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Solution

The fourth proportional to 142,590.88, 213,820.32 and 80,261.36 is: 120,354.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,590.88 : 213,820.32 = 80,261.36 : x
  2. Step 2: Convert to fraction form
    142,590.88/213,820.32 = 80,261.36/x
  3. Step 3: Cross multiply
    142,590.88x = 213,820.32 × 80,261.36
  4. Step 4: Simplify right side
    142,590.88x = 17,161,509,678.84
  5. Step 5: Solve for x
    x = 17,161,509,678.84/142,590.88
  6. Step 6: Final answer
    x = 120,354.89

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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.