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Finding the Fourth Proportional to 102,102.20, 152,807.70 and 89,660.60

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Solution

The fourth proportional to 102,102.20, 152,807.70 and 89,660.60 is: 134,187.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,102.20 : 152,807.70 = 89,660.60 : x
  2. Step 2: Convert to fraction form
    102,102.20/152,807.70 = 89,660.60/x
  3. Step 3: Cross multiply
    102,102.20x = 152,807.70 × 89,660.60
  4. Step 4: Simplify right side
    102,102.20x = 13,700,830,066.62
  5. Step 5: Solve for x
    x = 13,700,830,066.62/102,102.20
  6. Step 6: Final answer
    x = 134,187.41

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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.