Home / 111,742.92-154,210.77-69,315.12

Finding the Fourth Proportional to 111,742.92, 154,210.77 and 69,315.12

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Solution

The fourth proportional to 111,742.92, 154,210.77 and 69,315.12 is: 95,658.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,742.92 : 154,210.77 = 69,315.12 : x
  2. Step 2: Convert to fraction form
    111,742.92/154,210.77 = 69,315.12/x
  3. Step 3: Cross multiply
    111,742.92x = 154,210.77 × 69,315.12
  4. Step 4: Simplify right side
    111,742.92x = 10,689,138,027.84
  5. Step 5: Solve for x
    x = 10,689,138,027.84/111,742.92
  6. Step 6: Final answer
    x = 95,658.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.