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Finding the Fourth Proportional to 96,877.90, 145,316.85 and 80,493.90

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Solution

The fourth proportional to 96,877.90, 145,316.85 and 80,493.90 is: 120,740.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    96,877.90 : 145,316.85 = 80,493.90 : x
  2. Step 2: Convert to fraction form
    96,877.90/145,316.85 = 80,493.90/x
  3. Step 3: Cross multiply
    96,877.90x = 145,316.85 × 80,493.90
  4. Step 4: Simplify right side
    96,877.90x = 11,697,119,992.22
  5. Step 5: Solve for x
    x = 11,697,119,992.22/96,877.90
  6. Step 6: Final answer
    x = 120,740.85

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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.