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Finding the Fourth Proportional to 108,957.78, 163,447.29 and 42,403.32

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Solution

The fourth proportional to 108,957.78, 163,447.29 and 42,403.32 is: 63,609.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,957.78 : 163,447.29 = 42,403.32 : x
  2. Step 2: Convert to fraction form
    108,957.78/163,447.29 = 42,403.32/x
  3. Step 3: Cross multiply
    108,957.78x = 163,447.29 × 42,403.32
  4. Step 4: Simplify right side
    108,957.78x = 6,930,707,741.00
  5. Step 5: Solve for x
    x = 6,930,707,741.00/108,957.78
  6. Step 6: Final answer
    x = 63,609.11

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1.5x scale

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.