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Finding the Fourth Proportional to 108,501.63, 162,699.08 and 45,302.78

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Solution

The fourth proportional to 108,501.63, 162,699.08 and 45,302.78 is: 67,931.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,501.63 : 162,699.08 = 45,302.78 : x
  2. Step 2: Convert to fraction form
    108,501.63/162,699.08 = 45,302.78/x
  3. Step 3: Cross multiply
    108,501.63x = 162,699.08 × 45,302.78
  4. Step 4: Simplify right side
    108,501.63x = 7,370,719,587.43
  5. Step 5: Solve for x
    x = 7,370,719,587.43/108,501.63
  6. Step 6: Final answer
    x = 67,931.88

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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.