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Finding the Fourth Proportional to 118,703.89, 178,082.51 and 39,816.10

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Solution

The fourth proportional to 118,703.89, 178,082.51 and 39,816.10 is: 59,733.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,703.89 : 178,082.51 = 39,816.10 : x
  2. Step 2: Convert to fraction form
    118,703.89/178,082.51 = 39,816.10/x
  3. Step 3: Cross multiply
    118,703.89x = 178,082.51 × 39,816.10
  4. Step 4: Simplify right side
    118,703.89x = 7,090,551,026.41
  5. Step 5: Solve for x
    x = 7,090,551,026.41/118,703.89
  6. Step 6: Final answer
    x = 59,733.10

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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.