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Finding the Fourth Proportional to 162,702.74, 243,960.67 and 86,707.72

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Solution

The fourth proportional to 162,702.74, 243,960.67 and 86,707.72 is: 130,011.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,702.74 : 243,960.67 = 86,707.72 : x
  2. Step 2: Convert to fraction form
    162,702.74/243,960.67 = 86,707.72/x
  3. Step 3: Cross multiply
    162,702.74x = 243,960.67 × 86,707.72
  4. Step 4: Simplify right side
    162,702.74x = 21,153,273,465.37
  5. Step 5: Solve for x
    x = 21,153,273,465.37/162,702.74
  6. Step 6: Final answer
    x = 130,011.78

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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.