Home / 142,720.90-196,555.35-139,621.44

Finding the Fourth Proportional to 142,720.90, 196,555.35 and 139,621.44

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Solution

The fourth proportional to 142,720.90, 196,555.35 and 139,621.44 is: 192,286.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,720.90 : 196,555.35 = 139,621.44 : x
  2. Step 2: Convert to fraction form
    142,720.90/196,555.35 = 139,621.44/x
  3. Step 3: Cross multiply
    142,720.90x = 196,555.35 × 139,621.44
  4. Step 4: Simplify right side
    142,720.90x = 27,443,341,006.70
  5. Step 5: Solve for x
    x = 27,443,341,006.70/142,720.90
  6. Step 6: Final answer
    x = 192,286.77

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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.