Home / 102,117.08-140,910.76-56,787.72

Finding the Fourth Proportional to 102,117.08, 140,910.76 and 56,787.72

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Solution

The fourth proportional to 102,117.08, 140,910.76 and 56,787.72 is: 78,361.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,117.08 : 140,910.76 = 56,787.72 : x
  2. Step 2: Convert to fraction form
    102,117.08/140,910.76 = 56,787.72/x
  3. Step 3: Cross multiply
    102,117.08x = 140,910.76 × 56,787.72
  4. Step 4: Simplify right side
    102,117.08x = 8,002,000,783.87
  5. Step 5: Solve for x
    x = 8,002,000,783.87/102,117.08
  6. Step 6: Final answer
    x = 78,361.04

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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.