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Finding the Fourth Proportional to 180,612.79, 249,249.69 and 103,086.89

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Solution

The fourth proportional to 180,612.79, 249,249.69 and 103,086.89 is: 142,262.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,612.79 : 249,249.69 = 103,086.89 : x
  2. Step 2: Convert to fraction form
    180,612.79/249,249.69 = 103,086.89/x
  3. Step 3: Cross multiply
    180,612.79x = 249,249.69 × 103,086.89
  4. Step 4: Simplify right side
    180,612.79x = 25,694,375,064.00
  5. Step 5: Solve for x
    x = 25,694,375,064.00/180,612.79
  6. Step 6: Final answer
    x = 142,262.21

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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.