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Finding the Fourth Proportional to 111,980.90, 154,531.32 and 60,994.20

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Solution

The fourth proportional to 111,980.90, 154,531.32 and 60,994.20 is: 84,170.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,980.90 : 154,531.32 = 60,994.20 : x
  2. Step 2: Convert to fraction form
    111,980.90/154,531.32 = 60,994.20/x
  3. Step 3: Cross multiply
    111,980.90x = 154,531.32 × 60,994.20
  4. Step 4: Simplify right side
    111,980.90x = 9,425,514,238.34
  5. Step 5: Solve for x
    x = 9,425,514,238.34/111,980.90
  6. Step 6: Final answer
    x = 84,170.73

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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.