Home / 96,823.20-145,234.80-81,271.20

Finding the Fourth Proportional to 96,823.20, 145,234.80 and 81,271.20

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Solution

The fourth proportional to 96,823.20, 145,234.80 and 81,271.20 is: 121,906.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,823.20 : 145,234.80 = 81,271.20 : x
  2. Step 2: Convert to fraction form
    96,823.20/145,234.80 = 81,271.20/x
  3. Step 3: Cross multiply
    96,823.20x = 145,234.80 × 81,271.20
  4. Step 4: Simplify right side
    96,823.20x = 11,803,406,477.76
  5. Step 5: Solve for x
    x = 11,803,406,477.76/96,823.20
  6. Step 6: Final answer
    x = 121,906.80

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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.