Home / 120,363.34-180,414.69-78,273.63

Finding the Fourth Proportional to 120,363.34, 180,414.69 and 78,273.63

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Solution

The fourth proportional to 120,363.34, 180,414.69 and 78,273.63 is: 117,325.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,363.34 : 180,414.69 = 78,273.63 : x
  2. Step 2: Convert to fraction form
    120,363.34/180,414.69 = 78,273.63/x
  3. Step 3: Cross multiply
    120,363.34x = 180,414.69 × 78,273.63
  4. Step 4: Simplify right side
    120,363.34x = 14,121,712,907.86
  5. Step 5: Solve for x
    x = 14,121,712,907.86/120,363.34
  6. Step 6: Final answer
    x = 117,325.70

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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.