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Finding the Fourth Proportional to 180,855.18, 249,579.71 and 100,280.63

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Solution

The fourth proportional to 180,855.18, 249,579.71 and 100,280.63 is: 138,387.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,855.18 : 249,579.71 = 100,280.63 : x
  2. Step 2: Convert to fraction form
    180,855.18/249,579.71 = 100,280.63/x
  3. Step 3: Cross multiply
    180,855.18x = 249,579.71 × 100,280.63
  4. Step 4: Simplify right side
    180,855.18x = 25,028,008,804.72
  5. Step 5: Solve for x
    x = 25,028,008,804.72/180,855.18
  6. Step 6: Final answer
    x = 138,387.02

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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.