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Finding the Fourth Proportional to 181,401.60, 272,102.40 and 87,916.80

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Solution

The fourth proportional to 181,401.60, 272,102.40 and 87,916.80 is: 131,875.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,401.60 : 272,102.40 = 87,916.80 : x
  2. Step 2: Convert to fraction form
    181,401.60/272,102.40 = 87,916.80/x
  3. Step 3: Cross multiply
    181,401.60x = 272,102.40 × 87,916.80
  4. Step 4: Simplify right side
    181,401.60x = 23,922,372,280.32
  5. Step 5: Solve for x
    x = 23,922,372,280.32/181,401.60
  6. Step 6: Final answer
    x = 131,875.20

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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.