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Finding the Fourth Proportional to 108,920.54, 163,390.90 and 42,365.72

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Solution

The fourth proportional to 108,920.54, 163,390.90 and 42,365.72 is: 63,552.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,920.54 : 163,390.90 = 42,365.72 : x
  2. Step 2: Convert to fraction form
    108,920.54/163,390.90 = 42,365.72/x
  3. Step 3: Cross multiply
    108,920.54x = 163,390.90 × 42,365.72
  4. Step 4: Simplify right side
    108,920.54x = 6,922,173,119.95
  5. Step 5: Solve for x
    x = 6,922,173,119.95/108,920.54
  6. Step 6: Final answer
    x = 63,552.50

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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.