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Finding the Fourth Proportional to 161,668.86, 242,397.66 and 77,426.28

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Solution

The fourth proportional to 161,668.86, 242,397.66 and 77,426.28 is: 116,088.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,668.86 : 242,397.66 = 77,426.28 : x
  2. Step 2: Convert to fraction form
    161,668.86/242,397.66 = 77,426.28/x
  3. Step 3: Cross multiply
    161,668.86x = 242,397.66 × 77,426.28
  4. Step 4: Simplify right side
    161,668.86x = 18,767,947,495.39
  5. Step 5: Solve for x
    x = 18,767,947,495.39/161,668.86
  6. Step 6: Final answer
    x = 116,088.83

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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.