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Finding the Fourth Proportional to 180,900.54, 249,612.84 and 100,315.26

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Solution

The fourth proportional to 180,900.54, 249,612.84 and 100,315.26 is: 138,418.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,900.54 : 249,612.84 = 100,315.26 : x
  2. Step 2: Convert to fraction form
    180,900.54/249,612.84 = 100,315.26/x
  3. Step 3: Cross multiply
    180,900.54x = 249,612.84 × 100,315.26
  4. Step 4: Simplify right side
    180,900.54x = 25,039,976,943.94
  5. Step 5: Solve for x
    x = 25,039,976,943.94/180,900.54
  6. Step 6: Final answer
    x = 138,418.48

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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.