Home / 154,670.43-213,462.90-86,705.76

Finding the Fourth Proportional to 154,670.43, 213,462.90 and 86,705.76

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Solution

The fourth proportional to 154,670.43, 213,462.90 and 86,705.76 is: 119,663.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,670.43 : 213,462.90 = 86,705.76 : x
  2. Step 2: Convert to fraction form
    154,670.43/213,462.90 = 86,705.76/x
  3. Step 3: Cross multiply
    154,670.43x = 213,462.90 × 86,705.76
  4. Step 4: Simplify right side
    154,670.43x = 18,508,462,976.30
  5. Step 5: Solve for x
    x = 18,508,462,976.30/154,670.43
  6. Step 6: Final answer
    x = 119,663.87

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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.