Home / 143,403.15-197,901.17-78,877.37

Finding the Fourth Proportional to 143,403.15, 197,901.17 and 78,877.37

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Solution

The fourth proportional to 143,403.15, 197,901.17 and 78,877.37 is: 108,853.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,403.15 : 197,901.17 = 78,877.37 : x
  2. Step 2: Convert to fraction form
    143,403.15/197,901.17 = 78,877.37/x
  3. Step 3: Cross multiply
    143,403.15x = 197,901.17 × 78,877.37
  4. Step 4: Simplify right side
    143,403.15x = 15,609,922,425.63
  5. Step 5: Solve for x
    x = 15,609,922,425.63/143,403.15
  6. Step 6: Final answer
    x = 108,853.41

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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.