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Finding the Fourth Proportional to 132,628.50, 183,028.88 and 72,200.20

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Solution

The fourth proportional to 132,628.50, 183,028.88 and 72,200.20 is: 99,637.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,628.50 : 183,028.88 = 72,200.20 : x
  2. Step 2: Convert to fraction form
    132,628.50/183,028.88 = 72,200.20/x
  3. Step 3: Cross multiply
    132,628.50x = 183,028.88 × 72,200.20
  4. Step 4: Simplify right side
    132,628.50x = 13,214,721,741.78
  5. Step 5: Solve for x
    x = 13,214,721,741.78/132,628.50
  6. Step 6: Final answer
    x = 99,637.12

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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.