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Finding the Fourth Proportional to 163,587.72, 245,206.62 and 74,708.04

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Solution

The fourth proportional to 163,587.72, 245,206.62 and 74,708.04 is: 111,982.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,587.72 : 245,206.62 = 74,708.04 : x
  2. Step 2: Convert to fraction form
    163,587.72/245,206.62 = 74,708.04/x
  3. Step 3: Cross multiply
    163,587.72x = 245,206.62 × 74,708.04
  4. Step 4: Simplify right side
    163,587.72x = 18,318,905,975.22
  5. Step 5: Solve for x
    x = 18,318,905,975.22/163,587.72
  6. Step 6: Final answer
    x = 111,982.16

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.