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Finding the Fourth Proportional to 118,676.88, 163,952.10 and 77,937.66

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Solution

The fourth proportional to 118,676.88, 163,952.10 and 77,937.66 is: 107,670.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,676.88 : 163,952.10 = 77,937.66 : x
  2. Step 2: Convert to fraction form
    118,676.88/163,952.10 = 77,937.66/x
  3. Step 3: Cross multiply
    118,676.88x = 163,952.10 × 77,937.66
  4. Step 4: Simplify right side
    118,676.88x = 12,778,043,026.09
  5. Step 5: Solve for x
    x = 12,778,043,026.09/118,676.88
  6. Step 6: Final answer
    x = 107,670.87

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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.