Home / 141,302.45-212,117.70-85,205.90

Finding the Fourth Proportional to 141,302.45, 212,117.70 and 85,205.90

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Solution

The fourth proportional to 141,302.45, 212,117.70 and 85,205.90 is: 127,907.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,302.45 : 212,117.70 = 85,205.90 : x
  2. Step 2: Convert to fraction form
    141,302.45/212,117.70 = 85,205.90/x
  3. Step 3: Cross multiply
    141,302.45x = 212,117.70 × 85,205.90
  4. Step 4: Simplify right side
    141,302.45x = 18,073,679,534.43
  5. Step 5: Solve for x
    x = 18,073,679,534.43/141,302.45
  6. Step 6: Final answer
    x = 127,907.76

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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.