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Finding the Fourth Proportional to 108,721.60, 163,005.60 and 49,585.60

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Solution

The fourth proportional to 108,721.60, 163,005.60 and 49,585.60 is: 74,343.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,721.60 : 163,005.60 = 49,585.60 : x
  2. Step 2: Convert to fraction form
    108,721.60/163,005.60 = 49,585.60/x
  3. Step 3: Cross multiply
    108,721.60x = 163,005.60 × 49,585.60
  4. Step 4: Simplify right side
    108,721.60x = 8,082,730,479.36
  5. Step 5: Solve for x
    x = 8,082,730,479.36/108,721.60
  6. Step 6: Final answer
    x = 74,343.37

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1.5x scale

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.