Home / 141,922.58-212,642.96-85,644.45

Finding the Fourth Proportional to 141,922.58, 212,642.96 and 85,644.45

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Solution

The fourth proportional to 141,922.58, 212,642.96 and 85,644.45 is: 128,321.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,922.58 : 212,642.96 = 85,644.45 : x
  2. Step 2: Convert to fraction form
    141,922.58/212,642.96 = 85,644.45/x
  3. Step 3: Cross multiply
    141,922.58x = 212,642.96 × 85,644.45
  4. Step 4: Simplify right side
    141,922.58x = 18,211,688,927.35
  5. Step 5: Solve for x
    x = 18,211,688,927.35/141,922.58
  6. Step 6: Final answer
    x = 128,321.30

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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.