Home / 154,405.10-231,607.65-65,636.30

Finding the Fourth Proportional to 154,405.10, 231,607.65 and 65,636.30

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Solution

The fourth proportional to 154,405.10, 231,607.65 and 65,636.30 is: 98,454.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,405.10 : 231,607.65 = 65,636.30 : x
  2. Step 2: Convert to fraction form
    154,405.10/231,607.65 = 65,636.30/x
  3. Step 3: Cross multiply
    154,405.10x = 231,607.65 × 65,636.30
  4. Step 4: Simplify right side
    154,405.10x = 15,201,869,197.70
  5. Step 5: Solve for x
    x = 15,201,869,197.70/154,405.10
  6. Step 6: Final answer
    x = 98,454.45

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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.