Home / 111,972.18-154,514.52-61,671.18

Finding the Fourth Proportional to 111,972.18, 154,514.52 and 61,671.18

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Solution

The fourth proportional to 111,972.18, 154,514.52 and 61,671.18 is: 85,102.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,972.18 : 154,514.52 = 61,671.18 : x
  2. Step 2: Convert to fraction form
    111,972.18/154,514.52 = 61,671.18/x
  3. Step 3: Cross multiply
    111,972.18x = 154,514.52 × 61,671.18
  4. Step 4: Simplify right side
    111,972.18x = 9,529,092,775.53
  5. Step 5: Solve for x
    x = 9,529,092,775.53/111,972.18
  6. Step 6: Final answer
    x = 85,102.32

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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.