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Finding the Fourth Proportional to 159,579.84, 220,210.24 and 87,960.48

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Solution

The fourth proportional to 159,579.84, 220,210.24 and 87,960.48 is: 121,379.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,579.84 : 220,210.24 = 87,960.48 : x
  2. Step 2: Convert to fraction form
    159,579.84/220,210.24 = 87,960.48/x
  3. Step 3: Cross multiply
    159,579.84x = 220,210.24 × 87,960.48
  4. Step 4: Simplify right side
    159,579.84x = 19,369,798,411.32
  5. Step 5: Solve for x
    x = 19,369,798,411.32/159,579.84
  6. Step 6: Final answer
    x = 121,379.98

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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.