Home / 108,938.70-163,408.05-99,097.20

Finding the Fourth Proportional to 108,938.70, 163,408.05 and 99,097.20

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Solution

The fourth proportional to 108,938.70, 163,408.05 and 99,097.20 is: 148,645.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,938.70 : 163,408.05 = 99,097.20 : x
  2. Step 2: Convert to fraction form
    108,938.70/163,408.05 = 99,097.20/x
  3. Step 3: Cross multiply
    108,938.70x = 163,408.05 × 99,097.20
  4. Step 4: Simplify right side
    108,938.70x = 16,193,280,212.46
  5. Step 5: Solve for x
    x = 16,193,280,212.46/108,938.70
  6. Step 6: Final answer
    x = 148,645.80

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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.