Home / 143,218.80-197,731.80-129,740.40

Finding the Fourth Proportional to 143,218.80, 197,731.80 and 129,740.40

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Solution

The fourth proportional to 143,218.80, 197,731.80 and 129,740.40 is: 179,123.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,218.80 : 197,731.80 = 129,740.40 : x
  2. Step 2: Convert to fraction form
    143,218.80/197,731.80 = 129,740.40/x
  3. Step 3: Cross multiply
    143,218.80x = 197,731.80 × 129,740.40
  4. Step 4: Simplify right side
    143,218.80x = 25,653,802,824.72
  5. Step 5: Solve for x
    x = 25,653,802,824.72/143,218.80
  6. Step 6: Final answer
    x = 179,123.15

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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.