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Finding the Fourth Proportional to 132,843.63, 183,320.55 and 72,415.44

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Solution

The fourth proportional to 132,843.63, 183,320.55 and 72,415.44 is: 99,931.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,843.63 : 183,320.55 = 72,415.44 : x
  2. Step 2: Convert to fraction form
    132,843.63/183,320.55 = 72,415.44/x
  3. Step 3: Cross multiply
    132,843.63x = 183,320.55 × 72,415.44
  4. Step 4: Simplify right side
    132,843.63x = 13,275,238,289.29
  5. Step 5: Solve for x
    x = 13,275,238,289.29/132,843.63
  6. Step 6: Final answer
    x = 99,931.31

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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.