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Finding the Fourth Proportional to 180,478.52, 249,066.26 and 103,991.70

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Solution

The fourth proportional to 180,478.52, 249,066.26 and 103,991.70 is: 143,511.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,478.52 : 249,066.26 = 103,991.70 : x
  2. Step 2: Convert to fraction form
    180,478.52/249,066.26 = 103,991.70/x
  3. Step 3: Cross multiply
    180,478.52x = 249,066.26 × 103,991.70
  4. Step 4: Simplify right side
    180,478.52x = 25,900,823,790.04
  5. Step 5: Solve for x
    x = 25,900,823,790.04/180,478.52
  6. Step 6: Final answer
    x = 143,511.95

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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.