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Finding the Fourth Proportional to 157,794.60, 236,837.70 and 78,965.40

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Solution

The fourth proportional to 157,794.60, 236,837.70 and 78,965.40 is: 118,521.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,794.60 : 236,837.70 = 78,965.40 : x
  2. Step 2: Convert to fraction form
    157,794.60/236,837.70 = 78,965.40/x
  3. Step 3: Cross multiply
    157,794.60x = 236,837.70 × 78,965.40
  4. Step 4: Simplify right side
    157,794.60x = 18,701,983,715.58
  5. Step 5: Solve for x
    x = 18,701,983,715.58/157,794.60
  6. Step 6: Final answer
    x = 118,521.06

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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.