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Finding the Fourth Proportional to 103,125.60, 154,540.80 and 58,658.40

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Solution

The fourth proportional to 103,125.60, 154,540.80 and 58,658.40 is: 87,903.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,125.60 : 154,540.80 = 58,658.40 : x
  2. Step 2: Convert to fraction form
    103,125.60/154,540.80 = 58,658.40/x
  3. Step 3: Cross multiply
    103,125.60x = 154,540.80 × 58,658.40
  4. Step 4: Simplify right side
    103,125.60x = 9,065,116,062.72
  5. Step 5: Solve for x
    x = 9,065,116,062.72/103,125.60
  6. Step 6: Final answer
    x = 87,903.64

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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.