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Finding the Fourth Proportional to 151,443.66, 208,984.77 and 87,802.14

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Solution

The fourth proportional to 151,443.66, 208,984.77 and 87,802.14 is: 121,162.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,443.66 : 208,984.77 = 87,802.14 : x
  2. Step 2: Convert to fraction form
    151,443.66/208,984.77 = 87,802.14/x
  3. Step 3: Cross multiply
    151,443.66x = 208,984.77 × 87,802.14
  4. Step 4: Simplify right side
    151,443.66x = 18,349,310,033.41
  5. Step 5: Solve for x
    x = 18,349,310,033.41/151,443.66
  6. Step 6: Final answer
    x = 121,162.62

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.