Home / 142,243.56-196,298.64-78,577.56

Finding the Fourth Proportional to 142,243.56, 196,298.64 and 78,577.56

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Solution

The fourth proportional to 142,243.56, 196,298.64 and 78,577.56 is: 108,438.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,243.56 : 196,298.64 = 78,577.56 : x
  2. Step 2: Convert to fraction form
    142,243.56/196,298.64 = 78,577.56/x
  3. Step 3: Cross multiply
    142,243.56x = 196,298.64 × 78,577.56
  4. Step 4: Simplify right side
    142,243.56x = 15,424,668,162.52
  5. Step 5: Solve for x
    x = 15,424,668,162.52/142,243.56
  6. Step 6: Final answer
    x = 108,438.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.