Home / 82,248.13-123,378.27-72,455.23

Finding the Fourth Proportional to 82,248.13, 123,378.27 and 72,455.23

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Solution

The fourth proportional to 82,248.13, 123,378.27 and 72,455.23 is: 108,688.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,248.13 : 123,378.27 = 72,455.23 : x
  2. Step 2: Convert to fraction form
    82,248.13/123,378.27 = 72,455.23/x
  3. Step 3: Cross multiply
    82,248.13x = 123,378.27 × 72,455.23
  4. Step 4: Simplify right side
    82,248.13x = 8,939,400,929.85
  5. Step 5: Solve for x
    x = 8,939,400,929.85/82,248.13
  6. Step 6: Final answer
    x = 108,688.20

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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.