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Finding the Fourth Proportional to 154,424.10, 231,636.15 and 65,655.30

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Solution

The fourth proportional to 154,424.10, 231,636.15 and 65,655.30 is: 98,482.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,424.10 : 231,636.15 = 65,655.30 : x
  2. Step 2: Convert to fraction form
    154,424.10/231,636.15 = 65,655.30/x
  3. Step 3: Cross multiply
    154,424.10x = 231,636.15 × 65,655.30
  4. Step 4: Simplify right side
    154,424.10x = 15,208,140,919.10
  5. Step 5: Solve for x
    x = 15,208,140,919.10/154,424.10
  6. Step 6: Final answer
    x = 98,482.95

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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.