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Finding the Fourth Proportional to 161,681.20, 242,504.70 and 43,364.50

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Solution

The fourth proportional to 161,681.20, 242,504.70 and 43,364.50 is: 65,042.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,681.20 : 242,504.70 = 43,364.50 : x
  2. Step 2: Convert to fraction form
    161,681.20/242,504.70 = 43,364.50/x
  3. Step 3: Cross multiply
    161,681.20x = 242,504.70 × 43,364.50
  4. Step 4: Simplify right side
    161,681.20x = 10,516,095,063.15
  5. Step 5: Solve for x
    x = 10,516,095,063.15/161,681.20
  6. Step 6: Final answer
    x = 65,042.16

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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.