Home / 145,401.40-218,102.10-143,327.80

Finding the Fourth Proportional to 145,401.40, 218,102.10 and 143,327.80

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Solution

The fourth proportional to 145,401.40, 218,102.10 and 143,327.80 is: 214,991.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,401.40 : 218,102.10 = 143,327.80 : x
  2. Step 2: Convert to fraction form
    145,401.40/218,102.10 = 143,327.80/x
  3. Step 3: Cross multiply
    145,401.40x = 218,102.10 × 143,327.80
  4. Step 4: Simplify right side
    145,401.40x = 31,260,094,168.38
  5. Step 5: Solve for x
    x = 31,260,094,168.38/145,401.40
  6. Step 6: Final answer
    x = 214,991.70

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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.