Home / 132,819.50-183,291.05-72,390.20

Finding the Fourth Proportional to 132,819.50, 183,291.05 and 72,390.20

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Solution

The fourth proportional to 132,819.50, 183,291.05 and 72,390.20 is: 99,898.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,819.50 : 183,291.05 = 72,390.20 : x
  2. Step 2: Convert to fraction form
    132,819.50/183,291.05 = 72,390.20/x
  3. Step 3: Cross multiply
    132,819.50x = 183,291.05 × 72,390.20
  4. Step 4: Simplify right side
    132,819.50x = 13,268,475,032.23
  5. Step 5: Solve for x
    x = 13,268,475,032.23/132,819.50
  6. Step 6: Final answer
    x = 99,898.54

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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.