Home / 142,330.12-213,322.55-104,539.78

Finding the Fourth Proportional to 142,330.12, 213,322.55 and 104,539.78

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Solution

The fourth proportional to 142,330.12, 213,322.55 and 104,539.78 is: 156,682.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,330.12 : 213,322.55 = 104,539.78 : x
  2. Step 2: Convert to fraction form
    142,330.12/213,322.55 = 104,539.78/x
  3. Step 3: Cross multiply
    142,330.12x = 213,322.55 × 104,539.78
  4. Step 4: Simplify right side
    142,330.12x = 22,300,691,923.34
  5. Step 5: Solve for x
    x = 22,300,691,923.34/142,330.12
  6. Step 6: Final answer
    x = 156,682.88

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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.