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Finding the Fourth Proportional to 151,013.70, 226,695.45 and 81,029.70

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Solution

The fourth proportional to 151,013.70, 226,695.45 and 81,029.70 is: 121,638.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,013.70 : 226,695.45 = 81,029.70 : x
  2. Step 2: Convert to fraction form
    151,013.70/226,695.45 = 81,029.70/x
  3. Step 3: Cross multiply
    151,013.70x = 226,695.45 × 81,029.70
  4. Step 4: Simplify right side
    151,013.70x = 18,369,064,304.87
  5. Step 5: Solve for x
    x = 18,369,064,304.87/151,013.70
  6. Step 6: Final answer
    x = 121,638.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.