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Finding the Fourth Proportional to 159,368.64, 219,929.04 and 87,753.60

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Solution

The fourth proportional to 159,368.64, 219,929.04 and 87,753.60 is: 121,100.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,368.64 : 219,929.04 = 87,753.60 : x
  2. Step 2: Convert to fraction form
    159,368.64/219,929.04 = 87,753.60/x
  3. Step 3: Cross multiply
    159,368.64x = 219,929.04 × 87,753.60
  4. Step 4: Simplify right side
    159,368.64x = 19,299,565,004.54
  5. Step 5: Solve for x
    x = 19,299,565,004.54/159,368.64
  6. Step 6: Final answer
    x = 121,100.14

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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.