Home / 112,633.34-155,328.64-76,340.07

Finding the Fourth Proportional to 112,633.34, 155,328.64 and 76,340.07

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Solution

The fourth proportional to 112,633.34, 155,328.64 and 76,340.07 is: 105,277.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,633.34 : 155,328.64 = 76,340.07 : x
  2. Step 2: Convert to fraction form
    112,633.34/155,328.64 = 76,340.07/x
  3. Step 3: Cross multiply
    112,633.34x = 155,328.64 × 76,340.07
  4. Step 4: Simplify right side
    112,633.34x = 11,857,799,059.75
  5. Step 5: Solve for x
    x = 11,857,799,059.75/112,633.34
  6. Step 6: Final answer
    x = 105,277.88

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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.