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Finding the Fourth Proportional to 180,908.55, 249,621.60 and 109,240.56

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Solution

The fourth proportional to 180,908.55, 249,621.60 and 109,240.56 is: 150,732.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,908.55 : 249,621.60 = 109,240.56 : x
  2. Step 2: Convert to fraction form
    180,908.55/249,621.60 = 109,240.56/x
  3. Step 3: Cross multiply
    180,908.55x = 249,621.60 × 109,240.56
  4. Step 4: Simplify right side
    180,908.55x = 27,268,803,372.10
  5. Step 5: Solve for x
    x = 27,268,803,372.10/180,908.55
  6. Step 6: Final answer
    x = 150,732.53

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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.