Home / 143,403.63-197,901.80-78,875.59

Finding the Fourth Proportional to 143,403.63, 197,901.80 and 78,875.59

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Solution

The fourth proportional to 143,403.63, 197,901.80 and 78,875.59 is: 108,850.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,403.63 : 197,901.80 = 78,875.59 : x
  2. Step 2: Convert to fraction form
    143,403.63/197,901.80 = 78,875.59/x
  3. Step 3: Cross multiply
    143,403.63x = 197,901.80 × 78,875.59
  4. Step 4: Simplify right side
    143,403.63x = 15,609,620,939.50
  5. Step 5: Solve for x
    x = 15,609,620,939.50/143,403.63
  6. Step 6: Final answer
    x = 108,850.95

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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.