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Finding the Fourth Proportional to 159,551.02, 220,177.70 and 87,929.50

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Solution

The fourth proportional to 159,551.02, 220,177.70 and 87,929.50 is: 121,341.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,551.02 : 220,177.70 = 87,929.50 : x
  2. Step 2: Convert to fraction form
    159,551.02/220,177.70 = 87,929.50/x
  3. Step 3: Cross multiply
    159,551.02x = 220,177.70 × 87,929.50
  4. Step 4: Simplify right side
    159,551.02x = 19,360,115,072.15
  5. Step 5: Solve for x
    x = 19,360,115,072.15/159,551.02
  6. Step 6: Final answer
    x = 121,341.22

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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.