Home / 145,213.40-217,820.10-109,731.80

Finding the Fourth Proportional to 145,213.40, 217,820.10 and 109,731.80

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Solution

The fourth proportional to 145,213.40, 217,820.10 and 109,731.80 is: 164,597.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,213.40 : 217,820.10 = 109,731.80 : x
  2. Step 2: Convert to fraction form
    145,213.40/217,820.10 = 109,731.80/x
  3. Step 3: Cross multiply
    145,213.40x = 217,820.10 × 109,731.80
  4. Step 4: Simplify right side
    145,213.40x = 23,901,791,649.18
  5. Step 5: Solve for x
    x = 23,901,791,649.18/145,213.40
  6. Step 6: Final answer
    x = 164,597.70

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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.