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Finding the Fourth Proportional to 158,994.60, 219,401.94 and 87,373.08

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Solution

The fourth proportional to 158,994.60, 219,401.94 and 87,373.08 is: 120,569.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,994.60 : 219,401.94 = 87,373.08 : x
  2. Step 2: Convert to fraction form
    158,994.60/219,401.94 = 87,373.08/x
  3. Step 3: Cross multiply
    158,994.60x = 219,401.94 × 87,373.08
  4. Step 4: Simplify right side
    158,994.60x = 19,169,823,255.78
  5. Step 5: Solve for x
    x = 19,169,823,255.78/158,994.60
  6. Step 6: Final answer
    x = 120,569.02

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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.