Home / 99,421.40-149,132.10-67,928.60

Finding the Fourth Proportional to 99,421.40, 149,132.10 and 67,928.60

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Solution

The fourth proportional to 99,421.40, 149,132.10 and 67,928.60 is: 101,892.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,421.40 : 149,132.10 = 67,928.60 : x
  2. Step 2: Convert to fraction form
    99,421.40/149,132.10 = 67,928.60/x
  3. Step 3: Cross multiply
    99,421.40x = 149,132.10 × 67,928.60
  4. Step 4: Simplify right side
    99,421.40x = 10,130,334,768.06
  5. Step 5: Solve for x
    x = 10,130,334,768.06/99,421.40
  6. Step 6: Final answer
    x = 101,892.90

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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.