Home / 141,927.40-212,583.90-86,631.40

Finding the Fourth Proportional to 141,927.40, 212,583.90 and 86,631.40

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Solution

The fourth proportional to 141,927.40, 212,583.90 and 86,631.40 is: 129,759.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,927.40 : 212,583.90 = 86,631.40 : x
  2. Step 2: Convert to fraction form
    141,927.40/212,583.90 = 86,631.40/x
  3. Step 3: Cross multiply
    141,927.40x = 212,583.90 × 86,631.40
  4. Step 4: Simplify right side
    141,927.40x = 18,416,440,874.46
  5. Step 5: Solve for x
    x = 18,416,440,874.46/141,927.40
  6. Step 6: Final answer
    x = 129,759.59

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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.