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Finding the Fourth Proportional to 108,795.78, 163,117.13 and 42,179.76

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Solution

The fourth proportional to 108,795.78, 163,117.13 and 42,179.76 is: 63,239.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,795.78 : 163,117.13 = 42,179.76 : x
  2. Step 2: Convert to fraction form
    108,795.78/163,117.13 = 42,179.76/x
  3. Step 3: Cross multiply
    108,795.78x = 163,117.13 × 42,179.76
  4. Step 4: Simplify right side
    108,795.78x = 6,880,241,184.39
  5. Step 5: Solve for x
    x = 6,880,241,184.39/108,795.78
  6. Step 6: Final answer
    x = 63,239.96

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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.