Home / 229,124.91-316,178.09-138,427.29

Finding the Fourth Proportional to 229,124.91, 316,178.09 and 138,427.29

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Solution

The fourth proportional to 229,124.91, 316,178.09 and 138,427.29 is: 191,021.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,124.91 : 316,178.09 = 138,427.29 : x
  2. Step 2: Convert to fraction form
    229,124.91/316,178.09 = 138,427.29/x
  3. Step 3: Cross multiply
    229,124.91x = 316,178.09 × 138,427.29
  4. Step 4: Simplify right side
    229,124.91x = 43,767,675,463.94
  5. Step 5: Solve for x
    x = 43,767,675,463.94/229,124.91
  6. Step 6: Final answer
    x = 191,021.03

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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.