Home / 186,985.72-258,041.23-102,102.78

Finding the Fourth Proportional to 186,985.72, 258,041.23 and 102,102.78

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Solution

The fourth proportional to 186,985.72, 258,041.23 and 102,102.78 is: 140,902.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,985.72 : 258,041.23 = 102,102.78 : x
  2. Step 2: Convert to fraction form
    186,985.72/258,041.23 = 102,102.78/x
  3. Step 3: Cross multiply
    186,985.72x = 258,041.23 × 102,102.78
  4. Step 4: Simplify right side
    186,985.72x = 26,346,726,937.62
  5. Step 5: Solve for x
    x = 26,346,726,937.62/186,985.72
  6. Step 6: Final answer
    x = 140,902.35

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.