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Finding the Fourth Proportional to 140,612.92, 194,045.52 and 76,950.68

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Solution

The fourth proportional to 140,612.92, 194,045.52 and 76,950.68 is: 106,191.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,612.92 : 194,045.52 = 76,950.68 : x
  2. Step 2: Convert to fraction form
    140,612.92/194,045.52 = 76,950.68/x
  3. Step 3: Cross multiply
    140,612.92x = 194,045.52 × 76,950.68
  4. Step 4: Simplify right side
    140,612.92x = 14,931,934,714.95
  5. Step 5: Solve for x
    x = 14,931,934,714.95/140,612.92
  6. Step 6: Final answer
    x = 106,191.77

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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.