Home / 162,536.59-243,853.19-78,272.40

Finding the Fourth Proportional to 162,536.59, 243,853.19 and 78,272.40

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Solution

The fourth proportional to 162,536.59, 243,853.19 and 78,272.40 is: 117,431.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,536.59 : 243,853.19 = 78,272.40 : x
  2. Step 2: Convert to fraction form
    162,536.59/243,853.19 = 78,272.40/x
  3. Step 3: Cross multiply
    162,536.59x = 243,853.19 × 78,272.40
  4. Step 4: Simplify right side
    162,536.59x = 19,086,974,428.96
  5. Step 5: Solve for x
    x = 19,086,974,428.96/162,536.59
  6. Step 6: Final answer
    x = 117,431.86

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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.