Home / 140,429.04-193,810.20-80,021.40

Finding the Fourth Proportional to 140,429.04, 193,810.20 and 80,021.40

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Solution

The fourth proportional to 140,429.04, 193,810.20 and 80,021.40 is: 110,439.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,429.04 : 193,810.20 = 80,021.40 : x
  2. Step 2: Convert to fraction form
    140,429.04/193,810.20 = 80,021.40/x
  3. Step 3: Cross multiply
    140,429.04x = 193,810.20 × 80,021.40
  4. Step 4: Simplify right side
    140,429.04x = 15,508,963,538.28
  5. Step 5: Solve for x
    x = 15,508,963,538.28/140,429.04
  6. Step 6: Final answer
    x = 110,439.86

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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.