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Finding the Fourth Proportional to 180,875.56, 249,621.08 and 100,310.80

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Solution

The fourth proportional to 180,875.56, 249,621.08 and 100,310.80 is: 138,436.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,875.56 : 249,621.08 = 100,310.80 : x
  2. Step 2: Convert to fraction form
    180,875.56/249,621.08 = 100,310.80/x
  3. Step 3: Cross multiply
    180,875.56x = 249,621.08 × 100,310.80
  4. Step 4: Simplify right side
    180,875.56x = 25,039,690,231.66
  5. Step 5: Solve for x
    x = 25,039,690,231.66/180,875.56
  6. Step 6: Final answer
    x = 138,436.01

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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.