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Finding the Fourth Proportional to 132,365.88, 182,582.64 and 78,612.12

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Solution

The fourth proportional to 132,365.88, 182,582.64 and 78,612.12 is: 108,435.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,365.88 : 182,582.64 = 78,612.12 : x
  2. Step 2: Convert to fraction form
    132,365.88/182,582.64 = 78,612.12/x
  3. Step 3: Cross multiply
    132,365.88x = 182,582.64 × 78,612.12
  4. Step 4: Simplify right side
    132,365.88x = 14,353,208,405.60
  5. Step 5: Solve for x
    x = 14,353,208,405.60/132,365.88
  6. Step 6: Final answer
    x = 108,435.86

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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.