Home / 120,085.15-180,127.47-112,777.83

Finding the Fourth Proportional to 120,085.15, 180,127.47 and 112,777.83

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Solution

The fourth proportional to 120,085.15, 180,127.47 and 112,777.83 is: 169,166.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,085.15 : 180,127.47 = 112,777.83 : x
  2. Step 2: Convert to fraction form
    120,085.15/180,127.47 = 112,777.83/x
  3. Step 3: Cross multiply
    120,085.15x = 180,127.47 × 112,777.83
  4. Step 4: Simplify right side
    120,085.15x = 20,314,385,189.99
  5. Step 5: Solve for x
    x = 20,314,385,189.99/120,085.15
  6. Step 6: Final answer
    x = 169,166.51

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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.