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Finding the Fourth Proportional to 111,780.90, 167,671.35 and 65,000.97

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Solution

The fourth proportional to 111,780.90, 167,671.35 and 65,000.97 is: 97,501.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,780.90 : 167,671.35 = 65,000.97 : x
  2. Step 2: Convert to fraction form
    111,780.90/167,671.35 = 65,000.97/x
  3. Step 3: Cross multiply
    111,780.90x = 167,671.35 × 65,000.97
  4. Step 4: Simplify right side
    111,780.90x = 10,898,800,391.21
  5. Step 5: Solve for x
    x = 10,898,800,391.21/111,780.90
  6. Step 6: Final answer
    x = 97,501.46

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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.