Home / 142,612.76-196,810.20-82,178.60

Finding the Fourth Proportional to 142,612.76, 196,810.20 and 82,178.60

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Solution

The fourth proportional to 142,612.76, 196,810.20 and 82,178.60 is: 113,409.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,612.76 : 196,810.20 = 82,178.60 : x
  2. Step 2: Convert to fraction form
    142,612.76/196,810.20 = 82,178.60/x
  3. Step 3: Cross multiply
    142,612.76x = 196,810.20 × 82,178.60
  4. Step 4: Simplify right side
    142,612.76x = 16,173,586,701.72
  5. Step 5: Solve for x
    x = 16,173,586,701.72/142,612.76
  6. Step 6: Final answer
    x = 113,409.11

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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.