Home / 143,403.00-197,901.79-78,878.24

Finding the Fourth Proportional to 143,403.00, 197,901.79 and 78,878.24

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Solution

The fourth proportional to 143,403.00, 197,901.79 and 78,878.24 is: 108,855.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,403.00 : 197,901.79 = 78,878.24 : x
  2. Step 2: Convert to fraction form
    143,403.00/197,901.79 = 78,878.24/x
  3. Step 3: Cross multiply
    143,403.00x = 197,901.79 × 78,878.24
  4. Step 4: Simplify right side
    143,403.00x = 15,610,144,879.83
  5. Step 5: Solve for x
    x = 15,610,144,879.83/143,403.00
  6. Step 6: Final answer
    x = 108,855.08

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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.