Home / 99,493.20-149,021.10-59,981.40

Finding the Fourth Proportional to 99,493.20, 149,021.10 and 59,981.40

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Solution

The fourth proportional to 99,493.20, 149,021.10 and 59,981.40 is: 89,840.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,493.20 : 149,021.10 = 59,981.40 : x
  2. Step 2: Convert to fraction form
    99,493.20/149,021.10 = 59,981.40/x
  3. Step 3: Cross multiply
    99,493.20x = 149,021.10 × 59,981.40
  4. Step 4: Simplify right side
    99,493.20x = 8,938,494,207.54
  5. Step 5: Solve for x
    x = 8,938,494,207.54/99,493.20
  6. Step 6: Final answer
    x = 89,840.25

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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.