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Finding the Fourth Proportional to 132,618, 183,015.18 and 72,190.38

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Solution

The fourth proportional to 132,618, 183,015.18 and 72,190.38 is: 99,624.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,618 : 183,015.18 = 72,190.38 : x
  2. Step 2: Convert to fraction form
    132,618/183,015.18 = 72,190.38/x
  3. Step 3: Cross multiply
    132,618x = 183,015.18 × 72,190.38
  4. Step 4: Simplify right side
    132,618x = 13,211,935,389.97
  5. Step 5: Solve for x
    x = 13,211,935,389.97/132,618
  6. Step 6: Final answer
    x = 99,624.00

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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.