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Finding the Fourth Proportional to 98,684.64, 136,186.80 and 53,975.52

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Solution

The fourth proportional to 98,684.64, 136,186.80 and 53,975.52 is: 74,487.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,684.64 : 136,186.80 = 53,975.52 : x
  2. Step 2: Convert to fraction form
    98,684.64/136,186.80 = 53,975.52/x
  3. Step 3: Cross multiply
    98,684.64x = 136,186.80 × 53,975.52
  4. Step 4: Simplify right side
    98,684.64x = 7,350,753,347.14
  5. Step 5: Solve for x
    x = 7,350,753,347.14/98,684.64
  6. Step 6: Final answer
    x = 74,487.31

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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.