Home / 102,821.03-154,055.12-92,420.93

Finding the Fourth Proportional to 102,821.03, 154,055.12 and 92,420.93

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Solution

The fourth proportional to 102,821.03, 154,055.12 and 92,420.93 is: 138,472.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,821.03 : 154,055.12 = 92,420.93 : x
  2. Step 2: Convert to fraction form
    102,821.03/154,055.12 = 92,420.93/x
  3. Step 3: Cross multiply
    102,821.03x = 154,055.12 × 92,420.93
  4. Step 4: Simplify right side
    102,821.03x = 14,237,917,384.69
  5. Step 5: Solve for x
    x = 14,237,917,384.69/102,821.03
  6. Step 6: Final answer
    x = 138,472.82

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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.