Home / 112,983.35-155,915.64-65,235.66

Finding the Fourth Proportional to 112,983.35, 155,915.64 and 65,235.66

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Solution

The fourth proportional to 112,983.35, 155,915.64 and 65,235.66 is: 90,024.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,983.35 : 155,915.64 = 65,235.66 : x
  2. Step 2: Convert to fraction form
    112,983.35/155,915.64 = 65,235.66/x
  3. Step 3: Cross multiply
    112,983.35x = 155,915.64 × 65,235.66
  4. Step 4: Simplify right side
    112,983.35x = 10,171,259,679.72
  5. Step 5: Solve for x
    x = 10,171,259,679.72/112,983.35
  6. Step 6: Final answer
    x = 90,024.42

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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.