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Finding the Fourth Proportional to 153,019.70, 229,529.55 and 68,747.30

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Solution

The fourth proportional to 153,019.70, 229,529.55 and 68,747.30 is: 103,120.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,019.70 : 229,529.55 = 68,747.30 : x
  2. Step 2: Convert to fraction form
    153,019.70/229,529.55 = 68,747.30/x
  3. Step 3: Cross multiply
    153,019.70x = 229,529.55 × 68,747.30
  4. Step 4: Simplify right side
    153,019.70x = 15,779,536,832.72
  5. Step 5: Solve for x
    x = 15,779,536,832.72/153,019.70
  6. Step 6: Final answer
    x = 103,120.95

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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.