Home / 92,852.20-139,278.30-78,855.40

Finding the Fourth Proportional to 92,852.20, 139,278.30 and 78,855.40

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Solution

The fourth proportional to 92,852.20, 139,278.30 and 78,855.40 is: 118,283.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,852.20 : 139,278.30 = 78,855.40 : x
  2. Step 2: Convert to fraction form
    92,852.20/139,278.30 = 78,855.40/x
  3. Step 3: Cross multiply
    92,852.20x = 139,278.30 × 78,855.40
  4. Step 4: Simplify right side
    92,852.20x = 10,982,846,057.82
  5. Step 5: Solve for x
    x = 10,982,846,057.82/92,852.20
  6. Step 6: Final answer
    x = 118,283.10

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1.5x scale

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.