Home / 120,623.80-180,935.70-78,633.40

Finding the Fourth Proportional to 120,623.80, 180,935.70 and 78,633.40

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Solution

The fourth proportional to 120,623.80, 180,935.70 and 78,633.40 is: 117,950.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,623.80 : 180,935.70 = 78,633.40 : x
  2. Step 2: Convert to fraction form
    120,623.80/180,935.70 = 78,633.40/x
  3. Step 3: Cross multiply
    120,623.80x = 180,935.70 × 78,633.40
  4. Step 4: Simplify right side
    120,623.80x = 14,227,589,272.38
  5. Step 5: Solve for x
    x = 14,227,589,272.38/120,623.80
  6. Step 6: Final answer
    x = 117,950.10

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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.