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Finding the Fourth Proportional to 95,401.70, 143,102.55 and 86,216.30

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Solution

The fourth proportional to 95,401.70, 143,102.55 and 86,216.30 is: 129,324.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    95,401.70 : 143,102.55 = 86,216.30 : x
  2. Step 2: Convert to fraction form
    95,401.70/143,102.55 = 86,216.30/x
  3. Step 3: Cross multiply
    95,401.70x = 143,102.55 × 86,216.30
  4. Step 4: Simplify right side
    95,401.70x = 12,337,772,381.57
  5. Step 5: Solve for x
    x = 12,337,772,381.57/95,401.70
  6. Step 6: Final answer
    x = 129,324.45

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1.5x scale

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.