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Finding the Fourth Proportional to 118,781.08, 163,920.90 and 67,800.76

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Solution

The fourth proportional to 118,781.08, 163,920.90 and 67,800.76 is: 93,566.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,781.08 : 163,920.90 = 67,800.76 : x
  2. Step 2: Convert to fraction form
    118,781.08/163,920.90 = 67,800.76/x
  3. Step 3: Cross multiply
    118,781.08x = 163,920.90 × 67,800.76
  4. Step 4: Simplify right side
    118,781.08x = 11,113,961,599.88
  5. Step 5: Solve for x
    x = 11,113,961,599.88/118,781.08
  6. Step 6: Final answer
    x = 93,566.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.