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Finding the Fourth Proportional to 100,021.60, 149,830.80 and 62,466.40

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Solution

The fourth proportional to 100,021.60, 149,830.80 and 62,466.40 is: 93,573.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,021.60 : 149,830.80 = 62,466.40 : x
  2. Step 2: Convert to fraction form
    100,021.60/149,830.80 = 62,466.40/x
  3. Step 3: Cross multiply
    100,021.60x = 149,830.80 × 62,466.40
  4. Step 4: Simplify right side
    100,021.60x = 9,359,390,685.12
  5. Step 5: Solve for x
    x = 9,359,390,685.12/100,021.60
  6. Step 6: Final answer
    x = 93,573.69

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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.