Home / 143,580.28-198,133.02-79,036.94

Finding the Fourth Proportional to 143,580.28, 198,133.02 and 79,036.94

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Solution

The fourth proportional to 143,580.28, 198,133.02 and 79,036.94 is: 109,066.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,580.28 : 198,133.02 = 79,036.94 : x
  2. Step 2: Convert to fraction form
    143,580.28/198,133.02 = 79,036.94/x
  3. Step 3: Cross multiply
    143,580.28x = 198,133.02 × 79,036.94
  4. Step 4: Simplify right side
    143,580.28x = 15,659,827,613.76
  5. Step 5: Solve for x
    x = 15,659,827,613.76/143,580.28
  6. Step 6: Final answer
    x = 109,066.70

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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.