Home / 229,126.79-316,180.67-138,429.15

Finding the Fourth Proportional to 229,126.79, 316,180.67 and 138,429.15

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Solution

The fourth proportional to 229,126.79, 316,180.67 and 138,429.15 is: 191,023.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,126.79 : 316,180.67 = 138,429.15 : x
  2. Step 2: Convert to fraction form
    229,126.79/316,180.67 = 138,429.15/x
  3. Step 3: Cross multiply
    229,126.79x = 316,180.67 × 138,429.15
  4. Step 4: Simplify right side
    229,126.79x = 43,768,620,702.38
  5. Step 5: Solve for x
    x = 43,768,620,702.38/229,126.79
  6. Step 6: Final answer
    x = 191,023.59

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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.