Home / 133,231.28-183,864.52-76,642.64

Finding the Fourth Proportional to 133,231.28, 183,864.52 and 76,642.64

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Solution

The fourth proportional to 133,231.28, 183,864.52 and 76,642.64 is: 105,769.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,231.28 : 183,864.52 = 76,642.64 : x
  2. Step 2: Convert to fraction form
    133,231.28/183,864.52 = 76,642.64/x
  3. Step 3: Cross multiply
    133,231.28x = 183,864.52 × 76,642.64
  4. Step 4: Simplify right side
    133,231.28x = 14,091,862,215.13
  5. Step 5: Solve for x
    x = 14,091,862,215.13/133,231.28
  6. Step 6: Final answer
    x = 105,769.92

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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.