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Finding the Fourth Proportional to 97,874.60, 146,811.90 and 90,001.40

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Solution

The fourth proportional to 97,874.60, 146,811.90 and 90,001.40 is: 135,002.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,874.60 : 146,811.90 = 90,001.40 : x
  2. Step 2: Convert to fraction form
    97,874.60/146,811.90 = 90,001.40/x
  3. Step 3: Cross multiply
    97,874.60x = 146,811.90 × 90,001.40
  4. Step 4: Simplify right side
    97,874.60x = 13,213,276,536.66
  5. Step 5: Solve for x
    x = 13,213,276,536.66/97,874.60
  6. Step 6: Final answer
    x = 135,002.10

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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.