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Finding the Fourth Proportional to 162,126, 242,989.32 and 115,124.40

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Solution

The fourth proportional to 162,126, 242,989.32 and 115,124.40 is: 172,544.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,126 : 242,989.32 = 115,124.40 : x
  2. Step 2: Convert to fraction form
    162,126/242,989.32 = 115,124.40/x
  3. Step 3: Cross multiply
    162,126x = 242,989.32 × 115,124.40
  4. Step 4: Simplify right side
    162,126x = 27,973,999,671.41
  5. Step 5: Solve for x
    x = 27,973,999,671.41/162,126
  6. Step 6: Final answer
    x = 172,544.81

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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.