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Finding the Fourth Proportional to 159,302.88, 219,836.22 and 87,681.36

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Solution

The fourth proportional to 159,302.88, 219,836.22 and 87,681.36 is: 120,999.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,302.88 : 219,836.22 = 87,681.36 : x
  2. Step 2: Convert to fraction form
    159,302.88/219,836.22 = 87,681.36/x
  3. Step 3: Cross multiply
    159,302.88x = 219,836.22 × 87,681.36
  4. Step 4: Simplify right side
    159,302.88x = 19,275,538,746.86
  5. Step 5: Solve for x
    x = 19,275,538,746.86/159,302.88
  6. Step 6: Final answer
    x = 120,999.31

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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.