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Finding the Fourth Proportional to 108,913.70, 163,370.55 and 100,384.40

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Solution

The fourth proportional to 108,913.70, 163,370.55 and 100,384.40 is: 150,576.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,913.70 : 163,370.55 = 100,384.40 : x
  2. Step 2: Convert to fraction form
    108,913.70/163,370.55 = 100,384.40/x
  3. Step 3: Cross multiply
    108,913.70x = 163,370.55 × 100,384.40
  4. Step 4: Simplify right side
    108,913.70x = 16,399,854,639.42
  5. Step 5: Solve for x
    x = 16,399,854,639.42/108,913.70
  6. Step 6: Final answer
    x = 150,576.60

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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.