Home / 142,202.16-196,226.28-81,756.72

Finding the Fourth Proportional to 142,202.16, 196,226.28 and 81,756.72

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Solution

The fourth proportional to 142,202.16, 196,226.28 and 81,756.72 is: 112,816.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,202.16 : 196,226.28 = 81,756.72 : x
  2. Step 2: Convert to fraction form
    142,202.16/196,226.28 = 81,756.72/x
  3. Step 3: Cross multiply
    142,202.16x = 196,226.28 × 81,756.72
  4. Step 4: Simplify right side
    142,202.16x = 16,042,817,030.60
  5. Step 5: Solve for x
    x = 16,042,817,030.60/142,202.16
  6. Step 6: Final answer
    x = 112,816.97

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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.