Home / 131,459.40-197,189.10-99,966.60

Finding the Fourth Proportional to 131,459.40, 197,189.10 and 99,966.60

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Solution

The fourth proportional to 131,459.40, 197,189.10 and 99,966.60 is: 149,949.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,459.40 : 197,189.10 = 99,966.60 : x
  2. Step 2: Convert to fraction form
    131,459.40/197,189.10 = 99,966.60/x
  3. Step 3: Cross multiply
    131,459.40x = 197,189.10 × 99,966.60
  4. Step 4: Simplify right side
    131,459.40x = 19,712,323,884.06
  5. Step 5: Solve for x
    x = 19,712,323,884.06/131,459.40
  6. Step 6: Final answer
    x = 149,949.90

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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.