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Finding the Fourth Proportional to 108,656.64, 162,732.24 and 105,666.96

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Solution

The fourth proportional to 108,656.64, 162,732.24 and 105,666.96 is: 158,254.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,656.64 : 162,732.24 = 105,666.96 : x
  2. Step 2: Convert to fraction form
    108,656.64/162,732.24 = 105,666.96/x
  3. Step 3: Cross multiply
    108,656.64x = 162,732.24 × 105,666.96
  4. Step 4: Simplify right side
    108,656.64x = 17,195,421,094.79
  5. Step 5: Solve for x
    x = 17,195,421,094.79/108,656.64
  6. Step 6: Final answer
    x = 158,254.67

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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.