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Finding the Fourth Proportional to 98,899.03, 136,480.12 and 53,577.90

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Solution

The fourth proportional to 98,899.03, 136,480.12 and 53,577.90 is: 73,937.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,899.03 : 136,480.12 = 53,577.90 : x
  2. Step 2: Convert to fraction form
    98,899.03/136,480.12 = 53,577.90/x
  3. Step 3: Cross multiply
    98,899.03x = 136,480.12 × 53,577.90
  4. Step 4: Simplify right side
    98,899.03x = 7,312,318,221.35
  5. Step 5: Solve for x
    x = 7,312,318,221.35/98,899.03
  6. Step 6: Final answer
    x = 73,937.21

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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.