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Finding the Fourth Proportional to 98,105.48, 135,381.48 and 55,666.34

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Solution

The fourth proportional to 98,105.48, 135,381.48 and 55,666.34 is: 76,817.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,105.48 : 135,381.48 = 55,666.34 : x
  2. Step 2: Convert to fraction form
    98,105.48/135,381.48 = 55,666.34/x
  3. Step 3: Cross multiply
    98,105.48x = 135,381.48 × 55,666.34
  4. Step 4: Simplify right side
    98,105.48x = 7,536,191,495.38
  5. Step 5: Solve for x
    x = 7,536,191,495.38/98,105.48
  6. Step 6: Final answer
    x = 76,817.23

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1.5x scale

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.