Home / 102,116.70-140,910.30-56,787.35

Finding the Fourth Proportional to 102,116.70, 140,910.30 and 56,787.35

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Solution

The fourth proportional to 102,116.70, 140,910.30 and 56,787.35 is: 78,360.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,116.70 : 140,910.30 = 56,787.35 : x
  2. Step 2: Convert to fraction form
    102,116.70/140,910.30 = 56,787.35/x
  3. Step 3: Cross multiply
    102,116.70x = 140,910.30 × 56,787.35
  4. Step 4: Simplify right side
    102,116.70x = 8,001,921,820.15
  5. Step 5: Solve for x
    x = 8,001,921,820.15/102,116.70
  6. Step 6: Final answer
    x = 78,360.56

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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.