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Finding the Fourth Proportional to 108,920.30, 163,390.52 and 42,365.48

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Solution

The fourth proportional to 108,920.30, 163,390.52 and 42,365.48 is: 63,552.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,920.30 : 163,390.52 = 42,365.48 : x
  2. Step 2: Convert to fraction form
    108,920.30/163,390.52 = 42,365.48/x
  3. Step 3: Cross multiply
    108,920.30x = 163,390.52 × 42,365.48
  4. Step 4: Simplify right side
    108,920.30x = 6,922,117,807.25
  5. Step 5: Solve for x
    x = 6,922,117,807.25/108,920.30
  6. Step 6: Final answer
    x = 63,552.14

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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.