Home / 131,447.60-197,171.40-89,457.20

Finding the Fourth Proportional to 131,447.60, 197,171.40 and 89,457.20

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Solution

The fourth proportional to 131,447.60, 197,171.40 and 89,457.20 is: 134,185.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,447.60 : 197,171.40 = 89,457.20 : x
  2. Step 2: Convert to fraction form
    131,447.60/197,171.40 = 89,457.20/x
  3. Step 3: Cross multiply
    131,447.60x = 197,171.40 × 89,457.20
  4. Step 4: Simplify right side
    131,447.60x = 17,638,401,364.08
  5. Step 5: Solve for x
    x = 17,638,401,364.08/131,447.60
  6. Step 6: Final answer
    x = 134,185.80

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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.