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Finding the Fourth Proportional to 229,113.90, 316,168.88 and 127,143.81

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Solution

The fourth proportional to 229,113.90, 316,168.88 and 127,143.81 is: 175,453.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,113.90 : 316,168.88 = 127,143.81 : x
  2. Step 2: Convert to fraction form
    229,113.90/316,168.88 = 127,143.81/x
  3. Step 3: Cross multiply
    229,113.90x = 316,168.88 × 127,143.81
  4. Step 4: Simplify right side
    229,113.90x = 40,198,915,370.91
  5. Step 5: Solve for x
    x = 40,198,915,370.91/229,113.90
  6. Step 6: Final answer
    x = 175,453.85

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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.