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Finding the Fourth Proportional to 105,658.79, 158,498.01 and 38,207.72

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Solution

The fourth proportional to 105,658.79, 158,498.01 and 38,207.72 is: 57,315.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,658.79 : 158,498.01 = 38,207.72 : x
  2. Step 2: Convert to fraction form
    105,658.79/158,498.01 = 38,207.72/x
  3. Step 3: Cross multiply
    105,658.79x = 158,498.01 × 38,207.72
  4. Step 4: Simplify right side
    105,658.79x = 6,055,847,982.88
  5. Step 5: Solve for x
    x = 6,055,847,982.88/105,658.79
  6. Step 6: Final answer
    x = 57,315.14

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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.