Home / 137,973.02-190,369.50-80,579.76

Finding the Fourth Proportional to 137,973.02, 190,369.50 and 80,579.76

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Solution

The fourth proportional to 137,973.02, 190,369.50 and 80,579.76 is: 111,180.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,973.02 : 190,369.50 = 80,579.76 : x
  2. Step 2: Convert to fraction form
    137,973.02/190,369.50 = 80,579.76/x
  3. Step 3: Cross multiply
    137,973.02x = 190,369.50 × 80,579.76
  4. Step 4: Simplify right side
    137,973.02x = 15,339,928,621.32
  5. Step 5: Solve for x
    x = 15,339,928,621.32/137,973.02
  6. Step 6: Final answer
    x = 111,180.64

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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.