Home / 132,564.40-182,939.68-72,135.50

Finding the Fourth Proportional to 132,564.40, 182,939.68 and 72,135.50

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Solution

The fourth proportional to 132,564.40, 182,939.68 and 72,135.50 is: 99,547.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,564.40 : 182,939.68 = 72,135.50 : x
  2. Step 2: Convert to fraction form
    132,564.40/182,939.68 = 72,135.50/x
  3. Step 3: Cross multiply
    132,564.40x = 182,939.68 × 72,135.50
  4. Step 4: Simplify right side
    132,564.40x = 13,196,445,286.64
  5. Step 5: Solve for x
    x = 13,196,445,286.64/132,564.40
  6. Step 6: Final answer
    x = 99,547.43

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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.