Home / 120,623.40-180,935.10-101,269.80

Finding the Fourth Proportional to 120,623.40, 180,935.10 and 101,269.80

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Solution

The fourth proportional to 120,623.40, 180,935.10 and 101,269.80 is: 151,904.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,623.40 : 180,935.10 = 101,269.80 : x
  2. Step 2: Convert to fraction form
    120,623.40/180,935.10 = 101,269.80/x
  3. Step 3: Cross multiply
    120,623.40x = 180,935.10 × 101,269.80
  4. Step 4: Simplify right side
    120,623.40x = 18,323,261,389.98
  5. Step 5: Solve for x
    x = 18,323,261,389.98/120,623.40
  6. Step 6: Final answer
    x = 151,904.70

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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.