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Finding the Fourth Proportional to 118,001.70, 177,002.55 and 80,676.90

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Solution

The fourth proportional to 118,001.70, 177,002.55 and 80,676.90 is: 121,015.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,001.70 : 177,002.55 = 80,676.90 : x
  2. Step 2: Convert to fraction form
    118,001.70/177,002.55 = 80,676.90/x
  3. Step 3: Cross multiply
    118,001.70x = 177,002.55 × 80,676.90
  4. Step 4: Simplify right side
    118,001.70x = 14,280,017,026.10
  5. Step 5: Solve for x
    x = 14,280,017,026.10/118,001.70
  6. Step 6: Final answer
    x = 121,015.35

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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.