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Finding the Fourth Proportional to 136,648.66, 205,012.68 and 56,671.96

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Solution

The fourth proportional to 136,648.66, 205,012.68 and 56,671.96 is: 85,024.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,648.66 : 205,012.68 = 56,671.96 : x
  2. Step 2: Convert to fraction form
    136,648.66/205,012.68 = 56,671.96/x
  3. Step 3: Cross multiply
    136,648.66x = 205,012.68 × 56,671.96
  4. Step 4: Simplify right side
    136,648.66x = 11,618,470,400.45
  5. Step 5: Solve for x
    x = 11,618,470,400.45/136,648.66
  6. Step 6: Final answer
    x = 85,024.40

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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.