Home / 86,933,861.40-130,400,792.10-85,590,168.60

Finding the Fourth Proportional to 86,933,861.40, 130,400,792.10 and 85,590,168.60

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Solution

The fourth proportional to 86,933,861.40, 130,400,792.10 and 85,590,168.60 is: 128,385,252.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,933,861.40 : 130,400,792.10 = 85,590,168.60 : x
  2. Step 2: Convert to fraction form
    86,933,861.40/130,400,792.10 = 85,590,168.60/x
  3. Step 3: Cross multiply
    86,933,861.40x = 130,400,792.10 × 85,590,168.60
  4. Step 4: Simplify right side
    86,933,861.40x = 11,161,025,781,412,546
  5. Step 5: Solve for x
    x = 11,161,025,781,412,546/86,933,861.40
  6. Step 6: Final answer
    x = 128,385,252.90

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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.