Home / 108,437.78-162,905.88-76,926.08

Finding the Fourth Proportional to 108,437.78, 162,905.88 and 76,926.08

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Solution

The fourth proportional to 108,437.78, 162,905.88 and 76,926.08 is: 115,565.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,437.78 : 162,905.88 = 76,926.08 : x
  2. Step 2: Convert to fraction form
    108,437.78/162,905.88 = 76,926.08/x
  3. Step 3: Cross multiply
    108,437.78x = 162,905.88 × 76,926.08
  4. Step 4: Simplify right side
    108,437.78x = 12,531,710,757.35
  5. Step 5: Solve for x
    x = 12,531,710,757.35/108,437.78
  6. Step 6: Final answer
    x = 115,565.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.