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Finding the Fourth Proportional to 98,701.88, 136,208.59 and 53,989.88

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Solution

The fourth proportional to 98,701.88, 136,208.59 and 53,989.88 is: 74,506.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,701.88 : 136,208.59 = 53,989.88 : x
  2. Step 2: Convert to fraction form
    98,701.88/136,208.59 = 53,989.88/x
  3. Step 3: Cross multiply
    98,701.88x = 136,208.59 × 53,989.88
  4. Step 4: Simplify right side
    98,701.88x = 7,353,884,613.05
  5. Step 5: Solve for x
    x = 7,353,884,613.05/98,701.88
  6. Step 6: Final answer
    x = 74,506.03

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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.