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Finding the Fourth Proportional to 141,307.80, 212,307.30 and 106,315.80

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Solution

The fourth proportional to 141,307.80, 212,307.30 and 106,315.80 is: 159,733.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,307.80 : 212,307.30 = 106,315.80 : x
  2. Step 2: Convert to fraction form
    141,307.80/212,307.30 = 106,315.80/x
  3. Step 3: Cross multiply
    141,307.80x = 212,307.30 × 106,315.80
  4. Step 4: Simplify right side
    141,307.80x = 22,571,620,445.34
  5. Step 5: Solve for x
    x = 22,571,620,445.34/141,307.80
  6. Step 6: Final answer
    x = 159,733.72

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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.