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Finding the Fourth Proportional to 151,285.54, 208,802.04 and 87,623.32

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Solution

The fourth proportional to 151,285.54, 208,802.04 and 87,623.32 is: 120,936.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,285.54 : 208,802.04 = 87,623.32 : x
  2. Step 2: Convert to fraction form
    151,285.54/208,802.04 = 87,623.32/x
  3. Step 3: Cross multiply
    151,285.54x = 208,802.04 × 87,623.32
  4. Step 4: Simplify right side
    151,285.54x = 18,295,927,967.57
  5. Step 5: Solve for x
    x = 18,295,927,967.57/151,285.54
  6. Step 6: Final answer
    x = 120,936.40

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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.