Home / 188,108.12-282,210.78-69,813.20

Finding the Fourth Proportional to 188,108.12, 282,210.78 and 69,813.20

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Solution

The fourth proportional to 188,108.12, 282,210.78 and 69,813.20 is: 104,737.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,108.12 : 282,210.78 = 69,813.20 : x
  2. Step 2: Convert to fraction form
    188,108.12/282,210.78 = 69,813.20/x
  3. Step 3: Cross multiply
    188,108.12x = 282,210.78 × 69,813.20
  4. Step 4: Simplify right side
    188,108.12x = 19,702,037,626.30
  5. Step 5: Solve for x
    x = 19,702,037,626.30/188,108.12
  6. Step 6: Final answer
    x = 104,737.84

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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.