Home / 229,125.91-316,179.46-138,428.29

Finding the Fourth Proportional to 229,125.91, 316,179.46 and 138,428.29

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Solution

The fourth proportional to 229,125.91, 316,179.46 and 138,428.29 is: 191,022.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,125.91 : 316,179.46 = 138,428.29 : x
  2. Step 2: Convert to fraction form
    229,125.91/316,179.46 = 138,428.29/x
  3. Step 3: Cross multiply
    229,125.91x = 316,179.46 × 138,428.29
  4. Step 4: Simplify right side
    229,125.91x = 43,768,181,980.92
  5. Step 5: Solve for x
    x = 43,768,181,980.92/229,125.91
  6. Step 6: Final answer
    x = 191,022.40

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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.