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Finding the Fourth Proportional to 113,119.88, 156,088.05 and 65,363.96

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Solution

The fourth proportional to 113,119.88, 156,088.05 and 65,363.96 is: 90,192.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,119.88 : 156,088.05 = 65,363.96 : x
  2. Step 2: Convert to fraction form
    113,119.88/156,088.05 = 65,363.96/x
  3. Step 3: Cross multiply
    113,119.88x = 156,088.05 × 65,363.96
  4. Step 4: Simplify right side
    113,119.88x = 10,202,533,056.68
  5. Step 5: Solve for x
    x = 10,202,533,056.68/113,119.88
  6. Step 6: Final answer
    x = 90,192.22

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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.