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Finding the Fourth Proportional to 108,689.20, 163,033.80 and 98,847.70

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Solution

The fourth proportional to 108,689.20, 163,033.80 and 98,847.70 is: 148,271.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,689.20 : 163,033.80 = 98,847.70 : x
  2. Step 2: Convert to fraction form
    108,689.20/163,033.80 = 98,847.70/x
  3. Step 3: Cross multiply
    108,689.20x = 163,033.80 × 98,847.70
  4. Step 4: Simplify right side
    108,689.20x = 16,115,516,152.26
  5. Step 5: Solve for x
    x = 16,115,516,152.26/108,689.20
  6. Step 6: Final answer
    x = 148,271.55

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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.