Home / 143,133.96-197,531.02-79,471.76

Finding the Fourth Proportional to 143,133.96, 197,531.02 and 79,471.76

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Solution

The fourth proportional to 143,133.96, 197,531.02 and 79,471.76 is: 109,674.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,133.96 : 197,531.02 = 79,471.76 : x
  2. Step 2: Convert to fraction form
    143,133.96/197,531.02 = 79,471.76/x
  3. Step 3: Cross multiply
    143,133.96x = 197,531.02 × 79,471.76
  4. Step 4: Simplify right side
    143,133.96x = 15,698,137,814.00
  5. Step 5: Solve for x
    x = 15,698,137,814.00/143,133.96
  6. Step 6: Final answer
    x = 109,674.45

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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.