Home / 142,199.90-196,232.34-81,769.11

Finding the Fourth Proportional to 142,199.90, 196,232.34 and 81,769.11

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Solution

The fourth proportional to 142,199.90, 196,232.34 and 81,769.11 is: 112,839.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,199.90 : 196,232.34 = 81,769.11 : x
  2. Step 2: Convert to fraction form
    142,199.90/196,232.34 = 81,769.11/x
  3. Step 3: Cross multiply
    142,199.90x = 196,232.34 × 81,769.11
  4. Step 4: Simplify right side
    142,199.90x = 16,045,742,609.43
  5. Step 5: Solve for x
    x = 16,045,742,609.43/142,199.90
  6. Step 6: Final answer
    x = 112,839.34

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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.