Home / 143,153.68-197,548.32-79,489.84

Finding the Fourth Proportional to 143,153.68, 197,548.32 and 79,489.84

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Solution

The fourth proportional to 143,153.68, 197,548.32 and 79,489.84 is: 109,693.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,153.68 : 197,548.32 = 79,489.84 : x
  2. Step 2: Convert to fraction form
    143,153.68/197,548.32 = 79,489.84/x
  3. Step 3: Cross multiply
    143,153.68x = 197,548.32 × 79,489.84
  4. Step 4: Simplify right side
    143,153.68x = 15,703,084,349.07
  5. Step 5: Solve for x
    x = 15,703,084,349.07/143,153.68
  6. Step 6: Final answer
    x = 109,693.89

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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.