Home / 303,426.13-455,139.20-81,810.13

Finding the Fourth Proportional to 303,426.13, 455,139.20 and 81,810.13

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Solution

The fourth proportional to 303,426.13, 455,139.20 and 81,810.13 is: 122,715.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,426.13 : 455,139.20 = 81,810.13 : x
  2. Step 2: Convert to fraction form
    303,426.13/455,139.20 = 81,810.13/x
  3. Step 3: Cross multiply
    303,426.13x = 455,139.20 × 81,810.13
  4. Step 4: Simplify right side
    303,426.13x = 37,234,997,120.10
  5. Step 5: Solve for x
    x = 37,234,997,120.10/303,426.13
  6. Step 6: Final answer
    x = 122,715.20

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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.