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Finding the Fourth Proportional to 159,878.16, 239,747.58 and 84,980.34

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Solution

The fourth proportional to 159,878.16, 239,747.58 and 84,980.34 is: 127,433.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,878.16 : 239,747.58 = 84,980.34 : x
  2. Step 2: Convert to fraction form
    159,878.16/239,747.58 = 84,980.34/x
  3. Step 3: Cross multiply
    159,878.16x = 239,747.58 × 84,980.34
  4. Step 4: Simplify right side
    159,878.16x = 20,373,830,862.58
  5. Step 5: Solve for x
    x = 20,373,830,862.58/159,878.16
  6. Step 6: Final answer
    x = 127,433.48

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.