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Finding the Fourth Proportional to 118,808.90, 178,211.81 and 28,852.35

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Solution

The fourth proportional to 118,808.90, 178,211.81 and 28,852.35 is: 43,278.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,808.90 : 178,211.81 = 28,852.35 : x
  2. Step 2: Convert to fraction form
    118,808.90/178,211.81 = 28,852.35/x
  3. Step 3: Cross multiply
    118,808.90x = 178,211.81 × 28,852.35
  4. Step 4: Simplify right side
    118,808.90x = 5,141,829,983.39
  5. Step 5: Solve for x
    x = 5,141,829,983.39/118,808.90
  6. Step 6: Final answer
    x = 43,278.15

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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.